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is-link">Go</button> </div> </div> </form> </div> </div> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Kim%2C+Y&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Kim%2C+Y&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Kim%2C+Y&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> <li> <a href="/search/?searchtype=author&query=Kim%2C+Y&start=100" class="pagination-link " aria-label="Page 3" aria-current="page">3 </a> </li> <li> <a href="/search/?searchtype=author&query=Kim%2C+Y&start=150" class="pagination-link " aria-label="Page 4" aria-current="page">4 </a> </li> <li> <a href="/search/?searchtype=author&query=Kim%2C+Y&start=200" class="pagination-link " aria-label="Page 5" aria-current="page">5 </a> </li> <li><span class="pagination-ellipsis">…</span></li> </ul> </nav> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.05541">arXiv:2412.05541</a> <span> [<a href="https://arxiv.org/pdf/2412.05541">pdf</a>, <a href="https://arxiv.org/format/2412.05541">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Chaotic Dynamics">nlin.CD</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> </div> <p class="title is-5 mathjax"> Isochronous and period-doubling diagrams for symplectic maps of the plane </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Zolkin%2C+T">Tim Zolkin</a>, <a href="/search/physics?searchtype=author&query=Nagaitsev%2C+S">Sergei Nagaitsev</a>, <a href="/search/physics?searchtype=author&query=Morozov%2C+I">Ivan Morozov</a>, <a href="/search/physics?searchtype=author&query=Kladov%2C+S">Sergei Kladov</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Young-Kee Kim</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2412.05541v2-abstract-short" style="display: inline;"> Symplectic mappings of the plane serve as key models for exploring the fundamental nature of complex behavior in nonlinear systems. Central to this exploration is the effective visualization of stability regimes, which enables the interpretation of how systems evolve under varying conditions. While the area-preserving quadratic H茅non map has received significant theoretical attention, a comprehens… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.05541v2-abstract-full').style.display = 'inline'; document.getElementById('2412.05541v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.05541v2-abstract-full" style="display: none;"> Symplectic mappings of the plane serve as key models for exploring the fundamental nature of complex behavior in nonlinear systems. Central to this exploration is the effective visualization of stability regimes, which enables the interpretation of how systems evolve under varying conditions. While the area-preserving quadratic H茅non map has received significant theoretical attention, a comprehensive description of its mixed parameter-space dynamics remain lacking. This limitation arises from early attempts to reduce the full two-dimensional phase space to a one-dimensional projection, a simplification that resulted in the loss of important dynamical features. Consequently, there is a clear need for a more thorough understanding of the underlying qualitative aspects. This paper aims to address this gap by revisiting the foundational concepts of reversibility and associated symmetries, first explored in the early works of G.D. Birkhoff. We extend the original framework proposed by H茅non by adding a period-doubling diagram to his isochronous diagram, which allows to represents the system's bifurcations and the groups of symmetric periodic orbits that emerge in typical bifurcations of the fixed point. A qualitative and quantitative explanation of the main features of the region of parameters with bounded motion is provided, along with the application of this technique to other symplectic mappings, including cases of multiple reversibility. Modern chaos indicators, such as the Reversibility Error Method and the Generalized Alignment Index, are employed to distinguish between various dynamical regimes in the mixed space of variables and parameters. These tools prove effective in differentiating regular and chaotic dynamics, as well as in identifying twistless orbits and their associated bifurcations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.05541v2-abstract-full').style.display = 'none'; document.getElementById('2412.05541v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-24-0909 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.03845">arXiv:2412.03845</a> <span> [<a href="https://arxiv.org/pdf/2412.03845">pdf</a>, <a href="https://arxiv.org/format/2412.03845">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Development of decay energy spectroscopy for radio impurity analysis </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Chung%2C+J+S">J. S. Chung</a>, <a href="/search/physics?searchtype=author&query=Gileva%2C+O">O. Gileva</a>, <a href="/search/physics?searchtype=author&query=Ha%2C+C">C. Ha</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+J+A">J. A Jeon</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+H+B">H. B. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+H+L">H. L. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+H">Y. H. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+H+J">H. J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+M+B">M. B Kim</a>, <a href="/search/physics?searchtype=author&query=Kwon%2C+D+H">D. H. Kwon</a>, <a href="/search/physics?searchtype=author&query=Leonard%2C+D+S">D. S. Leonard</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+D+Y">D. Y. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+Y+C">Y. C. Lee</a>, <a href="/search/physics?searchtype=author&query=Lim%2C+H+S">H. S. Lim</a>, <a href="/search/physics?searchtype=author&query=Woo%2C+K+R">K. R. Woo</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+J+Y">J. Y. Yang</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2412.03845v1-abstract-short" style="display: inline;"> We present the development of a decay energy spectroscopy (DES) method for the analysis of radioactive impurities using magnetic microcalorimeters (MMCs). The DES system was designed to analyze radionuclides, such as Ra-226, Th-228, and their daughter nuclides, in materials like copper, commonly used in rare-event search experiments. We tested the DES system with a gold foil absorber measuring 20x… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.03845v1-abstract-full').style.display = 'inline'; document.getElementById('2412.03845v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.03845v1-abstract-full" style="display: none;"> We present the development of a decay energy spectroscopy (DES) method for the analysis of radioactive impurities using magnetic microcalorimeters (MMCs). The DES system was designed to analyze radionuclides, such as Ra-226, Th-228, and their daughter nuclides, in materials like copper, commonly used in rare-event search experiments. We tested the DES system with a gold foil absorber measuring 20x20x0.05 mm^3, large enough to accommodate a significant drop of source solution. Using this large absorber and an MMC sensor, we conducted a long-term measurement over ten days of live time, requiring 11 ADR cooling cycles. The combined spectrum achieved an energy resolution of 45 keV FWHM, sufficient to identify most alpha and DES peaks of interest. Specific decay events from radionuclide contaminants in the absorber were identified. This experiment confirms the capability of the DES system to measure alpha decay chains of Ra-226 and Th-228, offering a promising method for radio-impurity evaluation in ultra-low background experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.03845v1-abstract-full').style.display = 'none'; document.getElementById('2412.03845v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 5 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.19769">arXiv:2411.19769</a> <span> [<a href="https://arxiv.org/pdf/2411.19769">pdf</a>, <a href="https://arxiv.org/format/2411.19769">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Machine Learning">cs.LG</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Chemical Physics">physics.chem-ph</span> </div> </div> <p class="title is-5 mathjax"> Riemannian Denoising Score Matching for Molecular Structure Optimization with Accurate Energy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Woo%2C+J">Jeheon Woo</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S">Seonghwan Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+H">Jun Hyeong Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+W+Y">Woo Youn Kim</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.19769v1-abstract-short" style="display: inline;"> This study introduces a modified score matching method aimed at generating molecular structures with high energy accuracy. The denoising process of score matching or diffusion models mirrors molecular structure optimization, where scores act like physical force fields that guide particles toward equilibrium states. To achieve energetically accurate structures, it can be advantageous to have the sc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.19769v1-abstract-full').style.display = 'inline'; document.getElementById('2411.19769v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.19769v1-abstract-full" style="display: none;"> This study introduces a modified score matching method aimed at generating molecular structures with high energy accuracy. The denoising process of score matching or diffusion models mirrors molecular structure optimization, where scores act like physical force fields that guide particles toward equilibrium states. To achieve energetically accurate structures, it can be advantageous to have the score closely approximate the gradient of the actual potential energy surface. Unlike conventional methods that simply design the target score based on structural differences in Euclidean space, we propose a Riemannian score matching approach. This method represents molecular structures on a manifold defined by physics-informed internal coordinates to efficiently mimic the energy landscape, and performs noising and denoising within this space. Our method has been evaluated by refining several types of starting structures on the QM9 and GEOM datasets, demonstrating that the proposed Riemannian score matching method significantly improves the accuracy of the generated molecular structures, attaining chemical accuracy. The implications of this study extend to various applications in computational chemistry, offering a robust tool for accurate molecular structure prediction. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.19769v1-abstract-full').style.display = 'none'; document.getElementById('2411.19769v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.16092">arXiv:2411.16092</a> <span> [<a href="https://arxiv.org/pdf/2411.16092">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Electronic Trap Detection with Carrier-Resolved Photo-Hall Effect </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Gunawan%2C+O">Oki Gunawan</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+C">Chaeyoun Kim</a>, <a href="/search/physics?searchtype=author&query=Nainggolan%2C+B">Bonfilio Nainggolan</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+M">Minyeul Lee</a>, <a href="/search/physics?searchtype=author&query=Shin%2C+J">Jonghwa Shin</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+D+S">Dong Suk Kim</a>, <a href="/search/physics?searchtype=author&query=Jo%2C+Y">Yimhyun Jo</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+M">Minjin Kim</a>, <a href="/search/physics?searchtype=author&query=Euvrard%2C+J">Julie Euvrard</a>, <a href="/search/physics?searchtype=author&query=Bishop%2C+D">Douglas Bishop</a>, <a href="/search/physics?searchtype=author&query=Libsch%2C+F">Frank Libsch</a>, <a href="/search/physics?searchtype=author&query=Todorov%2C+T">Teodor Todorov</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Yunna Kim</a>, <a href="/search/physics?searchtype=author&query=Shin%2C+B">Byungha Shin</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.16092v1-abstract-short" style="display: inline;"> Electronic trap states are a critical yet unavoidable aspect of semiconductor devices, impacting performance of various electronic devices such as transistors, memory devices, solar cells, and LEDs. The density, energy level, and position of these trap states often enable or constrain device functionality, making their measurement crucial in materials science and device fabrication. Most methods f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.16092v1-abstract-full').style.display = 'inline'; document.getElementById('2411.16092v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.16092v1-abstract-full" style="display: none;"> Electronic trap states are a critical yet unavoidable aspect of semiconductor devices, impacting performance of various electronic devices such as transistors, memory devices, solar cells, and LEDs. The density, energy level, and position of these trap states often enable or constrain device functionality, making their measurement crucial in materials science and device fabrication. Most methods for measuring trap states involve fabricating a junction, which can inadvertently introduce or alter traps, highlighting the need for alternative, less-invasive techniques. Here, we present a unique photo-Hall-based method to detect and characterize trap density and energy level while concurrently extracting key carrier properties, including mobility, photocarrier density, recombination lifetime, and diffusion length. This technique relies on analyzing the photo-Hall data in terms of "photo-Hall conductivity" vs. electrical conductivity under varying light intensities and temperatures. We show that the photo-Hall effect, in the presence of traps, follows an $\textit{astonishingly simple}$ relationship - $\textit{a hyperbola equation}$ - that reveals detailed insights into charge transport and trap occupation. We have successfully applied this technique to P and N-type silicon as a benchmark and to high-performance halide perovskite photovoltaic films. This technique substantially expands the capability of Hall effect-based measurements by integrating the effects of the four most common excitations in nature - electric field, magnetic field, photon, and phonon in solids - into a single equation and enabling unparalleled extraction of charge carrier and trap properties in semiconductors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.16092v1-abstract-full').style.display = 'none'; document.getElementById('2411.16092v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Main manuscript (15 pages, 3 figures) and Supplementary information (27 pages, 7 figures, 4 tables)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.06279">arXiv:2411.06279</a> <span> [<a href="https://arxiv.org/pdf/2411.06279">pdf</a>, <a href="https://arxiv.org/format/2411.06279">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Fluid Dynamics">physics.flu-dyn</span> </div> </div> <p class="title is-5 mathjax"> Influence of three-dimensionality on wake synchronization of oscillatory cylinder </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Youngjae Kim</a>, <a href="/search/physics?searchtype=author&query=Godavarthi%2C+V">Vedasri Godavarthi</a>, <a href="/search/physics?searchtype=author&query=Rolandi%2C+L+V">Laura Victoria Rolandi</a>, <a href="/search/physics?searchtype=author&query=Klamo%2C+J+T">Joseph T. Klamo</a>, <a href="/search/physics?searchtype=author&query=Taira%2C+K">Kunihiko Taira</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.06279v2-abstract-short" style="display: inline;"> We investigate the effect of three-dimensionality on the synchronization characteristics of the wake behind an oscillating circular cylinder at Re = 300. Cylinder oscillations in rotation, transverse translation, and streamwise translation are considered. We utilize phase-reduction analysis, which quantifies the phase-sensitivity function of periodic flows, to examine the synchronization propertie… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.06279v2-abstract-full').style.display = 'inline'; document.getElementById('2411.06279v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.06279v2-abstract-full" style="display: none;"> We investigate the effect of three-dimensionality on the synchronization characteristics of the wake behind an oscillating circular cylinder at Re = 300. Cylinder oscillations in rotation, transverse translation, and streamwise translation are considered. We utilize phase-reduction analysis, which quantifies the phase-sensitivity function of periodic flows, to examine the synchronization properties. Here, we present an ensemble-based framework for phase-reduction analysis to handle three-dimensional wakes that are not perfectly time-periodic. Based on the phase-sensitivity functions, synchronizability to three types of cylinder oscillations is evaluated. In spite of similar trends, we find that phase-sensitivity functions involving three-dimensional wakes are lower in magnitude compared to those of two-dimensional wakes, which leads to narrower conditions for synchronization to weak cylinder oscillations. We unveil that the difference between the phase-sensitivity functions of two- and three-dimensional flows is strongly correlated to the amplitude variation of the three-dimensional flow by the cylinder motions. This finding reveals that the cylinder motion modifies the three-dimensionality of the wake as well as the phase of vortex shedding, which leads to reduced phase modulation. The synchronization conditions of three-dimensional wakes, predicted by phase-reduction analysis, agree with the identification by parametric studies using direct numerical simulations for forced oscillations with small amplitudes. This study presents the potential capability of phase-reduction to study synchronization characteristics of complex flows. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.06279v2-abstract-full').style.display = 'none'; document.getElementById('2411.06279v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">21 pages, 15 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.05256">arXiv:2411.05256</a> <span> [<a href="https://arxiv.org/pdf/2411.05256">pdf</a>, <a href="https://arxiv.org/format/2411.05256">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Radiopurity measurements of liquid scintillator for the COSINE-100 Upgrade </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kim%2C+J">J. Kim</a>, <a href="/search/physics?searchtype=author&query=Ha%2C+C">C. Ha</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+H">S. H. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+W+K">W. K. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+D">Y. D. Kim</a>, <a href="/search/physics?searchtype=author&query=Ko%2C+Y+J">Y. J. Ko</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+E+K">E. K. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+H">H. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+H+S">H. S. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+I+S">I. S. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+J">J. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+S+H">S. H. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+S+M">S. M. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+Y+J">Y. J. Lee</a>, <a href="/search/physics?searchtype=author&query=Yu%2C+G+H">G. H. Yu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.05256v1-abstract-short" style="display: inline;"> A new 2,400 L liquid scintillator has been produced for the COSINE-100 Upgrade, which is under construction at Yemilab for the next COSINE dark matter experiment phase. The linear-alkyl-benzene-based scintillator is designed to serve as a veto for NaI(Tl) crystal targets and a separate platform for rare event searches. We measured using a sample consisting of a custom-made 445 mL cylindrical Teflo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.05256v1-abstract-full').style.display = 'inline'; document.getElementById('2411.05256v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.05256v1-abstract-full" style="display: none;"> A new 2,400 L liquid scintillator has been produced for the COSINE-100 Upgrade, which is under construction at Yemilab for the next COSINE dark matter experiment phase. The linear-alkyl-benzene-based scintillator is designed to serve as a veto for NaI(Tl) crystal targets and a separate platform for rare event searches. We measured using a sample consisting of a custom-made 445 mL cylindrical Teflon container equipped with two 3-inch photomultiplier tubes. Analyses show activity levels of $0.091 \pm 0.042$ mBq/kg for $^{238}$U and $0.012 \pm 0.007$ mBq/kg for $^{232}$Th. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.05256v1-abstract-full').style.display = 'none'; document.getElementById('2411.05256v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.02501">arXiv:2411.02501</a> <span> [<a href="https://arxiv.org/pdf/2411.02501">pdf</a>, <a href="https://arxiv.org/format/2411.02501">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> </div> <p class="title is-5 mathjax"> Spectral characterization of a 3-port photonic lantern for application to spectroastrometry </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kim%2C+Y+J">Yoo Jung Kim</a>, <a href="/search/physics?searchtype=author&query=Fitzgerald%2C+M+P">Michael P. Fitzgerald</a>, <a href="/search/physics?searchtype=author&query=Lin%2C+J">Jonathan Lin</a>, <a href="/search/physics?searchtype=author&query=Lozi%2C+J">Julien Lozi</a>, <a href="/search/physics?searchtype=author&query=Vievard%2C+S">S茅bastien Vievard</a>, <a href="/search/physics?searchtype=author&query=Xin%2C+Y">Yinzi Xin</a>, <a href="/search/physics?searchtype=author&query=Levinstein%2C+D">Daniel Levinstein</a>, <a href="/search/physics?searchtype=author&query=Jovanovic%2C+N">Nemanja Jovanovic</a>, <a href="/search/physics?searchtype=author&query=Leon-Saval%2C+S">Sergio Leon-Saval</a>, <a href="/search/physics?searchtype=author&query=Betters%2C+C">Christopher Betters</a>, <a href="/search/physics?searchtype=author&query=Guyon%2C+O">Olivier Guyon</a>, <a href="/search/physics?searchtype=author&query=Norris%2C+B">Barnaby Norris</a>, <a href="/search/physics?searchtype=author&query=Sallum%2C+S">Steph Sallum</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.02501v1-abstract-short" style="display: inline;"> Spectroastrometry, which measures wavelength-dependent shifts in the center of light, is well-suited for studying objects whose morphology changes with wavelength at very high angular resolutions. Photonic lantern (PL)-fed spectrometers have potential to enable measurement of spectroastrometric signals because the relative intensities between the PL output SMFs contain spatial information on the i… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.02501v1-abstract-full').style.display = 'inline'; document.getElementById('2411.02501v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.02501v1-abstract-full" style="display: none;"> Spectroastrometry, which measures wavelength-dependent shifts in the center of light, is well-suited for studying objects whose morphology changes with wavelength at very high angular resolutions. Photonic lantern (PL)-fed spectrometers have potential to enable measurement of spectroastrometric signals because the relative intensities between the PL output SMFs contain spatial information on the input scene. In order to use PL output spectra for spectroastrometric measurements, it is important to understand the wavelength-dependent behaviors of PL outputs and develop methods to calibrate the effects of time-varying wavefront errors in ground-based observations. We present experimental characterizations of the 3-port PL on the SCExAO testbed at the Subaru Telescope. We develop spectral response models of the PL and verify the behaviors with lab experiments. We find sinusoidal behavior of astrometric sensitivity of the 3-port PL as a function of wavelength, as expected from numerical simulations. Furthermore, we compare experimental and numerically simulated coupling maps and discuss their potential use for offsetting pointing errors. We then present a method of building PL spectral response models (solving for the transfer matrices as a function of wavelength) using coupling maps, which can be used for further calibration strategies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.02501v1-abstract-full').style.display = 'none'; document.getElementById('2411.02501v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted for publication in the Journal of Astronomical Telescopes, Instruments, and Systems (JATIS)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.24110">arXiv:2410.24110</a> <span> [<a href="https://arxiv.org/pdf/2410.24110">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Biological Physics">physics.bio-ph</span> </div> </div> <p class="title is-5 mathjax"> Extended electrochemical monitoring of biomolecular binding using commercially available, reusable electrodes in microliter volumes </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Mendez%2C+J">Jeremy Mendez</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+E">Yae Eun Kim</a>, <a href="/search/physics?searchtype=author&query=Chowdhury%2C+N">Nafisah Chowdhury</a>, <a href="/search/physics?searchtype=author&query=Tziranis%2C+A">Alexios Tziranis</a>, <a href="/search/physics?searchtype=author&query=Le%2C+P">Phuong Le</a>, <a href="/search/physics?searchtype=author&query=Tran%2C+A">Angela Tran</a>, <a href="/search/physics?searchtype=author&query=Moron%2C+R">Rocio Moron</a>, <a href="/search/physics?searchtype=author&query=Rogers%2C+J">Julia Rogers</a>, <a href="/search/physics?searchtype=author&query=Chowdhury%2C+A">Aohona Chowdhury</a>, <a href="/search/physics?searchtype=author&query=Wall%2C+E">Elijah Wall</a>, <a href="/search/physics?searchtype=author&query=Arroyo-Curr%C3%A1s%2C+N">Netzahualc贸yotl Arroyo-Curr谩s</a>, <a href="/search/physics?searchtype=author&query=Lukeman%2C+P">Philip Lukeman</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.24110v1-abstract-short" style="display: inline;"> Electrochemical biosensors ("E-AB" or "E-DNA" type sensors) that utilize square-wave voltammetry originated in academic labs with a few standard experimental configurations for the electrochemical cell and data analysis. We report here on adaptations of these approaches that are friendly to novice scientists such as those in undergraduate laboratories. These approaches utilize commercially availab… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.24110v1-abstract-full').style.display = 'inline'; document.getElementById('2410.24110v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.24110v1-abstract-full" style="display: none;"> Electrochemical biosensors ("E-AB" or "E-DNA" type sensors) that utilize square-wave voltammetry originated in academic labs with a few standard experimental configurations for the electrochemical cell and data analysis. We report here on adaptations of these approaches that are friendly to novice scientists such as those in undergraduate laboratories. These approaches utilize commercially available components, low volumes, work over extended periods and enable facile analysis using a custom excel sheet. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.24110v1-abstract-full').style.display = 'none'; document.getElementById('2410.24110v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.22593">arXiv:2410.22593</a> <span> [<a href="https://arxiv.org/pdf/2410.22593">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1002/advs.202408034">10.1002/advs.202408034 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Highly tunable moir茅 superlattice potentials in twisted hexagonal boron nitrides </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Han%2C+K">Kwanghee Han</a>, <a href="/search/physics?searchtype=author&query=Cho%2C+M">Minhyun Cho</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+T">Taehyung Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+T">Seung Tae Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+H">Suk Hyun Kim</a>, <a href="/search/physics?searchtype=author&query=Park%2C+S+H">Sang Hwa Park</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+S+M">Sang Mo Yang</a>, <a href="/search/physics?searchtype=author&query=Watanabe%2C+K">Kenji Watanabe</a>, <a href="/search/physics?searchtype=author&query=Taniguchi%2C+T">Takashi Taniguchi</a>, <a href="/search/physics?searchtype=author&query=Menon%2C+V">Vinod Menon</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+D">Young Duck Kim</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.22593v1-abstract-short" style="display: inline;"> Moir茅 superlattice of twisted hexagonal boron nitride (hBN) has emerged as an advanced atomically thin van der Waals interfacial ferroelectricity platform. Nanoscale periodic ferroelectric moir茅 domains with out-of-plane potentials in twisted hBN allow the hosting of remote Coulomb superlattice potentials to adjacent two-dimensional materials for tailoring strongly correlated properties. Therefore… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.22593v1-abstract-full').style.display = 'inline'; document.getElementById('2410.22593v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.22593v1-abstract-full" style="display: none;"> Moir茅 superlattice of twisted hexagonal boron nitride (hBN) has emerged as an advanced atomically thin van der Waals interfacial ferroelectricity platform. Nanoscale periodic ferroelectric moir茅 domains with out-of-plane potentials in twisted hBN allow the hosting of remote Coulomb superlattice potentials to adjacent two-dimensional materials for tailoring strongly correlated properties. Therefore, the new strategies for engineering moir茅 length, angle, and potential strength are essential for developing programmable quantum materials and advanced twistronics applications devices. Here, we demonstrate the realization of twisted hBN-based moir茅 superlattice platforms and visualize the moir茅 domains and ferroelectric properties using Kelvin probe force microscopy. Also, we report the KPFM result of regular moir茅 superlattice in the large area. It offers the possibility to reproduce uniform moir茅 structures with precise control piezo stage stacking and heat annealing. We demonstrate the high tunability of twisted hBN moir茅 platforms and achieve cumulative multi-ferroelectric polarization and multi-level domains with multiple angle mismatched interfaces. Additionally, we observe the quasi-1D anisotropic moir茅 domains and show the highest resolution analysis of the local built-in strain between adjacent hBN layers compared to the conventional methods. Furthermore, we demonstrate in-situ manipulation of moir茅 superlattice potential strength using femtosecond pulse laser irradiation, which results in the optical phonon-induced atomic displacement at the hBN moir茅 interfaces. Our results pave the way to develop precisely programmable moir茅 superlattice platforms and investigate strongly correlated physics in van der Waals heterostructures. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.22593v1-abstract-full').style.display = 'none'; document.getElementById('2410.22593v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">26 pages, 4 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.18591">arXiv:2410.18591</a> <span> [<a href="https://arxiv.org/pdf/2410.18591">pdf</a>, <a href="https://arxiv.org/format/2410.18591">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> </div> </div> <p class="title is-5 mathjax"> Enhanced laser-induced single-cycle terahertz generation in a spintronic emitter with a gradient interface </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Shelukhin%2C+L+A">L. A. Shelukhin</a>, <a href="/search/physics?searchtype=author&query=Kuzikova%2C+A+V">A. V. Kuzikova</a>, <a href="/search/physics?searchtype=author&query=Telegin%2C+A+V">A. V. Telegin</a>, <a href="/search/physics?searchtype=author&query=Bessonov%2C+V+D">V. D. Bessonov</a>, <a href="/search/physics?searchtype=author&query=Ognev%2C+A+V">A. V. Ognev</a>, <a href="/search/physics?searchtype=author&query=Samardak%2C+A+S">A. S. Samardak</a>, <a href="/search/physics?searchtype=author&query=Park%2C+J">Junho Park</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+K">Young Keun Kim</a>, <a href="/search/physics?searchtype=author&query=Kalashnikova%2C+A+M">A. M. Kalashnikova</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.18591v2-abstract-short" style="display: inline;"> The development of spintronic emitters of broadband THz pulses relies on designing heterostructures where processes of laser-driven spin current generation and subsequent spin-to-charge current conversion are the most efficient. An interface between ferromagnetic and nonmagnetic layers in the emitter is one of the critical elements. Here, we study experimentally single-cycle THz pulse generation f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.18591v2-abstract-full').style.display = 'inline'; document.getElementById('2410.18591v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.18591v2-abstract-full" style="display: none;"> The development of spintronic emitters of broadband THz pulses relies on designing heterostructures where processes of laser-driven spin current generation and subsequent spin-to-charge current conversion are the most efficient. An interface between ferromagnetic and nonmagnetic layers in the emitter is one of the critical elements. Here, we study experimentally single-cycle THz pulse generation from a laser-pulse excited Pt/Co emitter with a composition gradient interface between Pt and Co and compare it with the emission from a conventional Pt/Co structure with an abrupt interface. We find that the gradient interface enhances the efficiency of optics-to-THz conversion by a factor of two in a wide range of optical fluences up to 3 mJ cm$^{-2}$. We reveal that this enhancement is caused by a pronounced increase in transmittance of the laser-driven spin-polarized current through the gradient interface compared to the abrupt one. Furthermore, we find that such a transmission deteriorates with laser fluence due to the spin accumulation effect. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.18591v2-abstract-full').style.display = 'none'; document.getElementById('2410.18591v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.10380">arXiv:2410.10380</a> <span> [<a href="https://arxiv.org/pdf/2410.10380">pdf</a>, <a href="https://arxiv.org/format/2410.10380">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Exactly Solvable and Integrable Systems">nlin.SI</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Chaotic Dynamics">nlin.CD</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> </div> <p class="title is-5 mathjax"> Dynamics of McMillan mappings III. Symmetric map with mixed nonlinearity </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Zolkin%2C+T">Tim Zolkin</a>, <a href="/search/physics?searchtype=author&query=Nagaitsev%2C+S">Sergei Nagaitsev</a>, <a href="/search/physics?searchtype=author&query=Morozov%2C+I">Ivan Morozov</a>, <a href="/search/physics?searchtype=author&query=Kladov%2C+S">Sergei Kladov</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Young-Kee Kim</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.10380v2-abstract-short" style="display: inline;"> This article extends the study of dynamical properties of the symmetric McMillan map, emphasizing its utility in understanding and modeling complex nonlinear systems. Although the map features six parameters, we demonstrate that only two are irreducible: the linearized rotation number at the fixed point and a nonlinear parameter representing the ratio of terms in the biquadratic invariant. Through… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.10380v2-abstract-full').style.display = 'inline'; document.getElementById('2410.10380v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.10380v2-abstract-full" style="display: none;"> This article extends the study of dynamical properties of the symmetric McMillan map, emphasizing its utility in understanding and modeling complex nonlinear systems. Although the map features six parameters, we demonstrate that only two are irreducible: the linearized rotation number at the fixed point and a nonlinear parameter representing the ratio of terms in the biquadratic invariant. Through a detailed analysis, we classify regimes of stable motion, provide exact solutions to the mapping equations, and derive a canonical set of action-angle variables, offering analytical expressions for the rotation number and nonlinear tune shift. We further establish connections between general standard-form mappings and the symmetric McMillan map, using the area-preserving H茅non map and accelerator lattices with thin sextupole magnet as representative case studies. Our results show that, despite being a second-order approximation, the symmetric McMillan map provides a highly accurate depiction of dynamics across a wide range of system parameters, demonstrating its practical relevance in both theoretical and applied contexts. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.10380v2-abstract-full').style.display = 'none'; document.getElementById('2410.10380v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-24-0766-AD </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.09002">arXiv:2410.09002</a> <span> [<a href="https://arxiv.org/pdf/2410.09002">pdf</a>, <a href="https://arxiv.org/format/2410.09002">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Geophysics">physics.geo-ph</span> </div> </div> <p class="title is-5 mathjax"> WaveDiffusion: Exploring Full Waveform Inversion via Joint Diffusion in the Latent Space </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Wang%2C+H">Hanchen Wang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y">Yinpeng Chen</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+J">Jeeun Kang</a>, <a href="/search/physics?searchtype=author&query=Wu%2C+Y">Yixuan Wu</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+J">Young Jin Kim</a>, <a href="/search/physics?searchtype=author&query=Lin%2C+Y">Youzuo Lin</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.09002v1-abstract-short" style="display: inline;"> Full Waveform Inversion (FWI) is a vital technique for reconstructing high-resolution subsurface velocity maps from seismic waveform data, governed by partial differential equations (PDEs) that model wave propagation. Traditional machine learning approaches typically map seismic data to velocity maps by encoding seismic waveforms into latent embeddings and decoding them into velocity maps. In this… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.09002v1-abstract-full').style.display = 'inline'; document.getElementById('2410.09002v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.09002v1-abstract-full" style="display: none;"> Full Waveform Inversion (FWI) is a vital technique for reconstructing high-resolution subsurface velocity maps from seismic waveform data, governed by partial differential equations (PDEs) that model wave propagation. Traditional machine learning approaches typically map seismic data to velocity maps by encoding seismic waveforms into latent embeddings and decoding them into velocity maps. In this paper, we introduce a novel framework that reframes FWI as a joint diffusion process in a shared latent space, bridging seismic waveform data and velocity maps. Our approach has two key components: first, we merge the bottlenecks of two separate autoencoders-one for seismic data and one for velocity maps-into a unified latent space using vector quantization to establish a shared codebook. Second, we train a diffusion model in this latent space, enabling the simultaneous generation of seismic and velocity map pairs by sampling and denoising the latent representations, followed by decoding each modality with its respective decoder. Remarkably, our jointly generated seismic-velocity pairs approximately satisfy the governing PDE without any additional constraint, offering a new geometric interpretation of FWI. The diffusion process learns to score the latent space according to its deviation from the PDE, with higher scores representing smaller deviations from the true solutions. By following this diffusion process, the model traces a path from random initialization to a valid solution of the governing PDE. Our experiments on the OpenFWI dataset demonstrate that the generated seismic and velocity map pairs not only exhibit high fidelity and diversity but also adhere to the physical constraints imposed by the governing PDE. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.09002v1-abstract-full').style.display = 'none'; document.getElementById('2410.09002v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.08580">arXiv:2410.08580</a> <span> [<a href="https://arxiv.org/pdf/2410.08580">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> </div> </div> <p class="title is-5 mathjax"> Mid-infrared group-IV nanowire laser </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Youngmin Kim</a>, <a href="/search/physics?searchtype=author&query=Assali%2C+S">Simone Assali</a>, <a href="/search/physics?searchtype=author&query=Ge%2C+J">Junyu Ge</a>, <a href="/search/physics?searchtype=author&query=Koelling%2C+S">Sebastian Koelling</a>, <a href="/search/physics?searchtype=author&query=Luo%2C+M">Manlin Luo</a>, <a href="/search/physics?searchtype=author&query=Luo%2C+L">Lu Luo</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+H">Hyo-Jun Joo</a>, <a href="/search/physics?searchtype=author&query=Tan%2C+J">James Tan</a>, <a href="/search/physics?searchtype=author&query=Shi%2C+X">Xuncheng Shi</a>, <a href="/search/physics?searchtype=author&query=Ikonic%2C+Z">Zoran Ikonic</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H">Hong Li</a>, <a href="/search/physics?searchtype=author&query=Moutanabbir%2C+O">Oussama Moutanabbir</a>, <a href="/search/physics?searchtype=author&query=Nam%2C+D">Donguk Nam</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.08580v1-abstract-short" style="display: inline;"> Semiconductor nanowires have shown great potential for enabling ultra-compact lasers for integrated photonics platforms. Despite the impressive progress in developing nanowire lasers, their integration into Si photonics platforms remains challenging largely due to the use of III-V and II-VI semiconductors as gain media. These materials not only have high material costs, but also require inherently… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.08580v1-abstract-full').style.display = 'inline'; document.getElementById('2410.08580v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.08580v1-abstract-full" style="display: none;"> Semiconductor nanowires have shown great potential for enabling ultra-compact lasers for integrated photonics platforms. Despite the impressive progress in developing nanowire lasers, their integration into Si photonics platforms remains challenging largely due to the use of III-V and II-VI semiconductors as gain media. These materials not only have high material costs, but also require inherently complex integration with Si-based fabrication processing, increasing overall costs and thereby limiting their large-scale adoption. Furthermore, these material-based nanowire lasers rarely emit above 2 um, which is a technologically important wavelength regime for various applications in imaging and quantum sensing. Recently, group-IV nanowires, particularly direct bandgap GeSn nanowires capable of emitting above 2 um, have emerged as promising cost-effective gain media for Si-compatible nanowire lasers, but there has been no successful demonstration of lasing from this seemingly promising nanowire platform. Herein, we report the experimental observation of lasing above 2 um from a single bottom-up grown GeSn nanowire. By harnessing strain engineering and optimized cavity designs simultaneously, the single GeSn nanowire achieves an amplified material gain that can sufficiently overcome minimized optical losses, resulting in a single-mode lasing with an ultra-low threshold of ~5.3 kW cm-2. Our finding paves the way for all-group IV mid-infrared photonic-integrated circuits with compact Si-compatible lasers for on-chip classical and quantum sensing and free-space communication. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.08580v1-abstract-full').style.display = 'none'; document.getElementById('2410.08580v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">24 pages, 4 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.04806">arXiv:2410.04806</a> <span> [<a href="https://arxiv.org/pdf/2410.04806">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> </div> <p class="title is-5 mathjax"> Topological beaming of light: Proof-of-concept experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Choi%2C+Y+S">Yu Sung Choi</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+K+Y">Ki Young Lee</a>, <a href="/search/physics?searchtype=author&query=An%2C+S">Soo-Chan An</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+M">Minchul Jang</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Youngjae Kim</a>, <a href="/search/physics?searchtype=author&query=Shin%2C+S+H">Seung Han Shin</a>, <a href="/search/physics?searchtype=author&query=Yoon%2C+J+W">Jae Woong Yoon</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.04806v1-abstract-short" style="display: inline;"> Beam shaping in nanophotonic systems remains a challenge due to the reliance on complex heuristic optimization procedures. In this work, we experimentally demonstrate a novel approach to topological beam shaping using Jackiw-Rebbi states in metasurfaces. By fabricating thin-film dielectric structures with engineered Dirac-mass distributions, we create domain walls that allow precise control over b… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.04806v1-abstract-full').style.display = 'inline'; document.getElementById('2410.04806v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.04806v1-abstract-full" style="display: none;"> Beam shaping in nanophotonic systems remains a challenge due to the reliance on complex heuristic optimization procedures. In this work, we experimentally demonstrate a novel approach to topological beam shaping using Jackiw-Rebbi states in metasurfaces. By fabricating thin-film dielectric structures with engineered Dirac-mass distributions, we create domain walls that allow precise control over beam profiles. We observe the emergence of Jackiw-Rebbi states and confirm their localized characteristics. Notably, we achieve a flat-top beam profile by carefully tailoring the Dirac mass distribution, highlighting the potential of this method for customized beam shaping. This experimental realization establishes our approach as a new mechanism for beam control, rooted in topological physics, and offers an efficient strategy for nanophotonic design. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.04806v1-abstract-full').style.display = 'none'; document.getElementById('2410.04806v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.00806">arXiv:2410.00806</a> <span> [<a href="https://arxiv.org/pdf/2410.00806">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Computational Physics">physics.comp-ph</span> </div> </div> <p class="title is-5 mathjax"> High-directivity multi-level beam switching with single-gate tunable metasurfaces based on graphene </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Park%2C+J">Juho Park</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+Y">Ju Young Kim</a>, <a href="/search/physics?searchtype=author&query=Nam%2C+S">Sunghyun Nam</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+M+S">Min Seok Jang</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.00806v1-abstract-short" style="display: inline;"> The growing demand for ultra-fast telecommunications, autonomous driving, and futuristic technologies highlights the crucial role of active beam steering at the nanoscale. This is essential for applications like LiDAR, beam-forming, and holographic displays, especially as devices reduce in form-factor. Although device with active beam switching capability is a potential candidate for realizing tho… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.00806v1-abstract-full').style.display = 'inline'; document.getElementById('2410.00806v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.00806v1-abstract-full" style="display: none;"> The growing demand for ultra-fast telecommunications, autonomous driving, and futuristic technologies highlights the crucial role of active beam steering at the nanoscale. This is essential for applications like LiDAR, beam-forming, and holographic displays, especially as devices reduce in form-factor. Although device with active beam switching capability is a potential candidate for realizing those applications, there have been only a few works to realize beam switching in reconfigurable metasurfaces with active tuning materials. In this paper, we theoretically present a multi-level beam-switching dielectric metasurface with a graphene layer for active tuning, addressing challenges associated with achieving high directivity and diffraction efficiency, and doing so while using a single-gate setup. For two-level switching, the directivities reached above 95%, and the diffraction efficiencies were near 50% at the operation wavelength $位_0$ = 8 $渭$m. Through quasi-normal mode expansion, we illustrate the physics of the beam switching metasurface inverse-designed by the adjoint method, highlighting the role of resonant modes and their response to charge carrier tuning. Under the same design scheme, we design and report characteristics of a three-level and four-level beam switching device, suggesting a possibility of generalizing to multi-level beam switching. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.00806v1-abstract-full').style.display = 'none'; document.getElementById('2410.00806v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.20013">arXiv:2409.20013</a> <span> [<a href="https://arxiv.org/pdf/2409.20013">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Computer Vision and Pattern Recognition">cs.CV</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Machine Learning">cs.LG</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantitative Methods">q-bio.QM</span> </div> </div> <p class="title is-5 mathjax"> Single-shot reconstruction of three-dimensional morphology of biological cells in digital holographic microscopy using a physics-driven neural network </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kim%2C+J">Jihwan Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Youngdo Kim</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+H+S">Hyo Seung Lee</a>, <a href="/search/physics?searchtype=author&query=Seo%2C+E">Eunseok Seo</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+S+J">Sang Joon Lee</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.20013v1-abstract-short" style="display: inline;"> Recent advances in deep learning-based image reconstruction techniques have led to significant progress in phase retrieval using digital in-line holographic microscopy (DIHM). However, existing deep learning-based phase retrieval methods have technical limitations in generalization performance and three-dimensional (3D) morphology reconstruction from a single-shot hologram of biological cells. In… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.20013v1-abstract-full').style.display = 'inline'; document.getElementById('2409.20013v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.20013v1-abstract-full" style="display: none;"> Recent advances in deep learning-based image reconstruction techniques have led to significant progress in phase retrieval using digital in-line holographic microscopy (DIHM). However, existing deep learning-based phase retrieval methods have technical limitations in generalization performance and three-dimensional (3D) morphology reconstruction from a single-shot hologram of biological cells. In this study, we propose a novel deep learning model, named MorpHoloNet, for single-shot reconstruction of 3D morphology by integrating physics-driven and coordinate-based neural networks. By simulating the optical diffraction of coherent light through a 3D phase shift distribution, the proposed MorpHoloNet is optimized by minimizing the loss between the simulated and input holograms on the sensor plane. Compared to existing DIHM methods that face challenges with twin image and phase retrieval problems, MorpHoloNet enables direct reconstruction of 3D complex light field and 3D morphology of a test sample from its single-shot hologram without requiring multiple phase-shifted holograms or angle scanning. The performance of the proposed MorpHoloNet is validated by reconstructing 3D morphologies and refractive index distributions from synthetic holograms of ellipsoids and experimental holograms of biological cells. The proposed deep learning model is utilized to reconstruct spatiotemporal variations in 3D translational and rotational behaviors and morphological deformations of biological cells from consecutive single-shot holograms captured using DIHM. MorpHoloNet would pave the way for advancing label-free, real-time 3D imaging and dynamic analysis of biological cells under various cellular microenvironments in biomedical and engineering fields. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.20013v1-abstract-full').style.display = 'none'; document.getElementById('2409.20013v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">35 pages, 7 figures, 1 table</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.18282">arXiv:2409.18282</a> <span> [<a href="https://arxiv.org/pdf/2409.18282">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Image and Video Processing">eess.IV</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Computer Vision and Pattern Recognition">cs.CV</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> </div> <p class="title is-5 mathjax"> Synthesizing beta-amyloid PET images from T1-weighted Structural MRI: A Preliminary Study </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lyu%2C+Q">Qing Lyu</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+Y">Jin Young Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J">Jeongchul Kim</a>, <a href="/search/physics?searchtype=author&query=Whitlow%2C+C+T">Christopher T Whitlow</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.18282v2-abstract-short" style="display: inline;"> Beta-amyloid positron emission tomography (A$尾$-PET) imaging has become a critical tool in Alzheimer's disease (AD) research and diagnosis, providing insights into the pathological accumulation of amyloid plaques, one of the hallmarks of AD. However, the high cost, limited availability, and exposure to radioactivity restrict the widespread use of A$尾$-PET imaging, leading to a scarcity of comprehe… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.18282v2-abstract-full').style.display = 'inline'; document.getElementById('2409.18282v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.18282v2-abstract-full" style="display: none;"> Beta-amyloid positron emission tomography (A$尾$-PET) imaging has become a critical tool in Alzheimer's disease (AD) research and diagnosis, providing insights into the pathological accumulation of amyloid plaques, one of the hallmarks of AD. However, the high cost, limited availability, and exposure to radioactivity restrict the widespread use of A$尾$-PET imaging, leading to a scarcity of comprehensive datasets. Previous studies have suggested that structural magnetic resonance imaging (MRI), which is more readily available, may serve as a viable alternative for synthesizing A$尾$-PET images. In this study, we propose an approach to utilize 3D diffusion models to synthesize A$尾$-PET images from T1-weighted MRI scans, aiming to overcome the limitations associated with direct PET imaging. Our method generates high-quality A$尾$-PET images for cognitive normal cases, although it is less effective for mild cognitive impairment (MCI) patients due to the variability in A$尾$ deposition patterns among subjects. Our preliminary results suggest that incorporating additional data, such as a larger sample of MCI cases and multi-modality information including clinical and demographic details, cognitive and functional assessments, and longitudinal data, may be necessary to improve A$尾$-PET image synthesis for MCI patients. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.18282v2-abstract-full').style.display = 'none'; document.getElementById('2409.18282v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.17343">arXiv:2409.17343</a> <span> [<a href="https://arxiv.org/pdf/2409.17343">pdf</a>, <a href="https://arxiv.org/format/2409.17343">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Pattern Formation and Solitons">nlin.PS</span> </div> </div> <p class="title is-5 mathjax"> Nonlinear Dynamics of Coupled-Resonator Kerr-Combs </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sanyal%2C+S">Swarnava Sanyal</a>, <a href="/search/physics?searchtype=author&query=Okawachi%2C+Y">Yoshitomo Okawachi</a>, <a href="/search/physics?searchtype=author&query=Zhao%2C+Y">Yun Zhao</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+B+Y">Bok Young Kim</a>, <a href="/search/physics?searchtype=author&query=McNulty%2C+K+J">Karl J. McNulty</a>, <a href="/search/physics?searchtype=author&query=Lipson%2C+M">Michal Lipson</a>, <a href="/search/physics?searchtype=author&query=Gaeta%2C+A+L">Alexander L. Gaeta</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.17343v1-abstract-short" style="display: inline;"> The nonlinear interaction of a microresonator pumped by a laser has revealed complex dynamics including soliton formation and chaos. Initial studies of coupled-resonator systems reveal even more complicated dynamics that can lead to deterministic modelocking and efficient comb generation. Here we perform theoretical analysis and experiments that provide insight into the dynamical behavior of coupl… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.17343v1-abstract-full').style.display = 'inline'; document.getElementById('2409.17343v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.17343v1-abstract-full" style="display: none;"> The nonlinear interaction of a microresonator pumped by a laser has revealed complex dynamics including soliton formation and chaos. Initial studies of coupled-resonator systems reveal even more complicated dynamics that can lead to deterministic modelocking and efficient comb generation. Here we perform theoretical analysis and experiments that provide insight into the dynamical behavior of coupled-resonator systems operating in the normal group-velocity-dispersion regime. Our stability analysis and simulations reveal that the strong mode-coupling regime, which gives rise to spectrally-broad comb states, can lead to an instability mechanism in the auxiliary resonator that destabilizes the comb state and prevents mode-locking. We find that this instability can be suppressed by introducing loss in the auxiliary resonator. We investigate the stability of both single- and multi-pulse solutions and verify our theoretical predictions by performing experiments in a silicon-nitride platform. Our results provide an understanding for accessing broad, efficient, relatively flat high-power mode-locked combs for numerous applications in spectroscopy, time-frequency metrology, and data communications. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.17343v1-abstract-full').style.display = 'none'; document.getElementById('2409.17343v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.16759">arXiv:2409.16759</a> <span> [<a href="https://arxiv.org/pdf/2409.16759">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> </div> <p class="title is-5 mathjax"> Carrier-envelope-phase-independent field sampling of single-cycle transients using Homochromatic Attosecond Streaking </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kim%2C+H+Y">H. Y. Kim</a>, <a href="/search/physics?searchtype=author&query=Pi%2C+Z">Z. Pi</a>, <a href="/search/physics?searchtype=author&query=Goulielmakis%2C+E">E. Goulielmakis</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.16759v1-abstract-short" style="display: inline;"> The recent development of Homochromatic Attosecond Streaking (HAS) has enabled a novel, highly precise method for ultrafast metrology of attosecond electron pulses as well as for real-time sampling of the instantaneous field waveforms of light transients. Here, we evaluate the potential of HAS as a method for precisely sampling the field waveform of non-phase-stabilized, single-cycle transients of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.16759v1-abstract-full').style.display = 'inline'; document.getElementById('2409.16759v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.16759v1-abstract-full" style="display: none;"> The recent development of Homochromatic Attosecond Streaking (HAS) has enabled a novel, highly precise method for ultrafast metrology of attosecond electron pulses as well as for real-time sampling of the instantaneous field waveforms of light transients. Here, we evaluate the potential of HAS as a method for precisely sampling the field waveform of non-phase-stabilized, single-cycle transients of light. We show that the extreme nonlinearity of field emission allows our technique to isolate and track the waveform of a single carrier-envelope phase (CEP) setting whose field dynamics results in the most energetic electron cutoff. Our results establish HAS as a robust, compact, all-solid-state method for characterizing light fields with attosecond-level precision and as a powerful tool in light field synthesis. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.16759v1-abstract-full').style.display = 'none'; document.getElementById('2409.16759v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.15748">arXiv:2409.15748</a> <span> [<a href="https://arxiv.org/pdf/2409.15748">pdf</a>, <a href="https://arxiv.org/format/2409.15748">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> COSINE-100U: Upgrading the COSINE-100 Experiment for Enhanced Sensitivity to Low-Mass Dark Matter Detection </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lee%2C+D+H">D. H. Lee</a>, <a href="/search/physics?searchtype=author&query=Cho%2C+J+Y">J. Y. Cho</a>, <a href="/search/physics?searchtype=author&query=Ha%2C+C">C. Ha</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+E+J">E. J. Jeon</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+H+J">H. J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J">J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+K+W">K. W. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+H">S. H. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+K">S. K. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+W+K">W. K. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+D">Y. D. Kim</a>, <a href="/search/physics?searchtype=author&query=Ko%2C+Y+J">Y. J. Ko</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+H">H. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+H+S">H. S. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+I+S">I. S. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+J">J. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+S+H">S. H. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+S+M">S. M. Lee</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+R+H">R. H. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Park%2C+J+C">J. C. Park</a>, <a href="/search/physics?searchtype=author&query=Park%2C+K+S">K. S. Park</a>, <a href="/search/physics?searchtype=author&query=Park%2C+K">K. Park</a>, <a href="/search/physics?searchtype=author&query=Park%2C+S+D">S. D. Park</a>, <a href="/search/physics?searchtype=author&query=Seo%2C+K+M">K. M. Seo</a>, <a href="/search/physics?searchtype=author&query=Son%2C+M+K">M. K. Son</a> , et al. (1 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.15748v1-abstract-short" style="display: inline;"> An upgrade of the COSINE-100 experiment, COSINE-100U, has been prepared for installation at Yemilab, a new underground laboratory in Korea, following 6.4 years of operation at the Yangyang Underground Laboratory. The COSINE-100 experiment aimed to investigate the annual modulation signals reported by the DAMA/LIBRA but observed a null result, revealing a more than 3$蟽$ discrepancy. COSINE-100U see… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.15748v1-abstract-full').style.display = 'inline'; document.getElementById('2409.15748v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.15748v1-abstract-full" style="display: none;"> An upgrade of the COSINE-100 experiment, COSINE-100U, has been prepared for installation at Yemilab, a new underground laboratory in Korea, following 6.4 years of operation at the Yangyang Underground Laboratory. The COSINE-100 experiment aimed to investigate the annual modulation signals reported by the DAMA/LIBRA but observed a null result, revealing a more than 3$蟽$ discrepancy. COSINE-100U seeks to explore new parameter spaces for dark matter detection using NaI(Tl) detectors. All eight NaI(Tl) crystals, with a total mass of 99.1 kg, have been upgraded to improve light collection efficiency, significantly enhancing dark matter detection sensitivity. This paper describes the detector upgrades, performance improvements, and the enhanced sensitivity to low-mass dark matter detection in the COSINE-100U experiment. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.15748v1-abstract-full').style.display = 'none'; document.getElementById('2409.15748v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, 17 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.08460">arXiv:2409.08460</a> <span> [<a href="https://arxiv.org/pdf/2409.08460">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3390/nano13162344">10.3390/nano13162344 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Color Centers in Hexagonal Boron Nitride </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kim%2C+S+H">Suk Hyun Kim</a>, <a href="/search/physics?searchtype=author&query=Park%2C+K+H">Kyeong Ho Park</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+Y+G">Young Gie Lee</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+S+J">Seong Jun Kang</a>, <a href="/search/physics?searchtype=author&query=Park%2C+Y">Yongsup Park</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+D">Young Duck Kim</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.08460v1-abstract-short" style="display: inline;"> Atomically thin two-dimensional (2D) hexagonal boron nitride (hBN) has emerged as an essential material for the encapsulation layer in van der Waals heterostructures and efficient deep ultra-violet optoelectronics. This is primarily due to its remarkable physical properties and ultrawide bandgap (close to 6 eV, and even larger in some cases) properties. Color centers in hBN refer to intrinsic vaca… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.08460v1-abstract-full').style.display = 'inline'; document.getElementById('2409.08460v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.08460v1-abstract-full" style="display: none;"> Atomically thin two-dimensional (2D) hexagonal boron nitride (hBN) has emerged as an essential material for the encapsulation layer in van der Waals heterostructures and efficient deep ultra-violet optoelectronics. This is primarily due to its remarkable physical properties and ultrawide bandgap (close to 6 eV, and even larger in some cases) properties. Color centers in hBN refer to intrinsic vacancies and extrinsic impurities within the 2D crystal lattice, which result in distinct optical properties in the ultraviolet (UV) to near-infrared (IR) range. Furthermore, each color center in hBN exhibits a unique emission spectrum and possesses various spin properties. These characteristics open up possibilities for the development of next-generation optoelectronics and quantum information applications, including room-temperature single-photon sources and quantum sensors. Here, we provide a comprehensive overview of the atomic configuration, optical and quantum properties, and different techniques employed for the formation of color centers in hBN. A deep understanding of color centers in hBN allows for advances in the development of next-generation UV optoelectronic applications, solid-state quantum technologies, and nanophotonics by harnessing the exceptional capabilities offered by hBN color centers. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.08460v1-abstract-full').style.display = 'none'; document.getElementById('2409.08460v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nanomaterials 13, 2344 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.06999">arXiv:2409.06999</a> <span> [<a href="https://arxiv.org/pdf/2409.06999">pdf</a>, <a href="https://arxiv.org/format/2409.06999">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> </div> <p class="title is-5 mathjax"> Moir茅 exciton polaron engineering via twisted hBN </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Cho%2C+M">Minhyun Cho</a>, <a href="/search/physics?searchtype=author&query=Datta%2C+B">Biswajit Datta</a>, <a href="/search/physics?searchtype=author&query=Han%2C+K">Kwanghee Han</a>, <a href="/search/physics?searchtype=author&query=Chand%2C+S+B">Saroj B. Chand</a>, <a href="/search/physics?searchtype=author&query=Adak%2C+P+C">Pratap Chandra Adak</a>, <a href="/search/physics?searchtype=author&query=Yu%2C+S">Sichao Yu</a>, <a href="/search/physics?searchtype=author&query=Li%2C+F">Fengping Li</a>, <a href="/search/physics?searchtype=author&query=Watanabe%2C+K">Kenji Watanabe</a>, <a href="/search/physics?searchtype=author&query=Taniguchi%2C+T">Takashi Taniguchi</a>, <a href="/search/physics?searchtype=author&query=Hone%2C+J">James Hone</a>, <a href="/search/physics?searchtype=author&query=Jung%2C+J">Jeil Jung</a>, <a href="/search/physics?searchtype=author&query=Grosso%2C+G">Gabriele Grosso</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+D">Young Duck Kim</a>, <a href="/search/physics?searchtype=author&query=Menon%2C+V+M">Vinod M. Menon</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.06999v1-abstract-short" style="display: inline;"> Twisted hexagonal boron nitride (thBN) exhibits emergent ferroelectricity due to the formation of moir茅 superlattices with alternating AB and BA domains. These domains possess electric dipoles, leading to a periodic electrostatic potential that can be imprinted onto other 2D materials placed in its proximity. Here we demonstrate the remote imprinting of moir茅 patterns from twisted hexagonal boron… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.06999v1-abstract-full').style.display = 'inline'; document.getElementById('2409.06999v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.06999v1-abstract-full" style="display: none;"> Twisted hexagonal boron nitride (thBN) exhibits emergent ferroelectricity due to the formation of moir茅 superlattices with alternating AB and BA domains. These domains possess electric dipoles, leading to a periodic electrostatic potential that can be imprinted onto other 2D materials placed in its proximity. Here we demonstrate the remote imprinting of moir茅 patterns from twisted hexagonal boron nitride (thBN) onto monolayer MoSe2 and investigate the resulting changes in the exciton properties. We confirm the imprinting of moir茅 patterns on monolayer MoSe2 via proximity using Kelvin probe force microscopy (KPFM) and hyperspectral photoluminescence (PL) mapping. By developing a technique to create large ferroelectric domain sizes ranging from 1 渭m to 8.7 渭m, we achieve unprecedented potential modulation of 387 +- 52 meV. We observe the formation of exciton polarons due to charge redistribution caused by the antiferroelectric moir茅 domains and investigate the optical property changes induced by the moir茅 pattern in monolayer MoSe2 by varying the moir茅 pattern size down to 110 nm. Our findings highlight the potential of twisted hBN as a platform for controlling the optical and electronic properties of 2D materials for optoelectronic and valleytronic applications. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.06999v1-abstract-full').style.display = 'none'; document.getElementById('2409.06999v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.17391">arXiv:2408.17391</a> <span> [<a href="https://arxiv.org/pdf/2408.17391">pdf</a>, <a href="https://arxiv.org/format/2408.17391">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1361-6471/ad9039">10.1088/1361-6471/ad9039 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Two-neutrino double electron capture of $^{124}$Xe in the first LUX-ZEPLIN exposure </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Aalbers%2C+J">J. Aalbers</a>, <a href="/search/physics?searchtype=author&query=Akerib%2C+D+S">D. S. Akerib</a>, <a href="/search/physics?searchtype=author&query=Musalhi%2C+A+K+A">A. K. Al Musalhi</a>, <a href="/search/physics?searchtype=author&query=Alder%2C+F">F. Alder</a>, <a href="/search/physics?searchtype=author&query=Amarasinghe%2C+C+S">C. S. Amarasinghe</a>, <a href="/search/physics?searchtype=author&query=Ames%2C+A">A. Ames</a>, <a href="/search/physics?searchtype=author&query=Anderson%2C+T+J">T. J. Anderson</a>, <a href="/search/physics?searchtype=author&query=Angelides%2C+N">N. Angelides</a>, <a href="/search/physics?searchtype=author&query=Ara%C3%BAjo%2C+H+M">H. M. Ara煤jo</a>, <a href="/search/physics?searchtype=author&query=Armstrong%2C+J+E">J. E. Armstrong</a>, <a href="/search/physics?searchtype=author&query=Arthurs%2C+M">M. Arthurs</a>, <a href="/search/physics?searchtype=author&query=Baker%2C+A">A. Baker</a>, <a href="/search/physics?searchtype=author&query=Balashov%2C+S">S. Balashov</a>, <a href="/search/physics?searchtype=author&query=Bang%2C+J">J. Bang</a>, <a href="/search/physics?searchtype=author&query=Bargemann%2C+J+W">J. W. Bargemann</a>, <a href="/search/physics?searchtype=author&query=Barillier%2C+E+E">E. E. Barillier</a>, <a href="/search/physics?searchtype=author&query=Beattie%2C+K">K. Beattie</a>, <a href="/search/physics?searchtype=author&query=Bhatti%2C+A">A. Bhatti</a>, <a href="/search/physics?searchtype=author&query=Biekert%2C+A">A. Biekert</a>, <a href="/search/physics?searchtype=author&query=Biesiadzinski%2C+T+P">T. P. Biesiadzinski</a>, <a href="/search/physics?searchtype=author&query=Birch%2C+H+J">H. J. Birch</a>, <a href="/search/physics?searchtype=author&query=Bishop%2C+E">E. Bishop</a>, <a href="/search/physics?searchtype=author&query=Blockinger%2C+G+M">G. M. Blockinger</a>, <a href="/search/physics?searchtype=author&query=Boxer%2C+B">B. Boxer</a>, <a href="/search/physics?searchtype=author&query=Brew%2C+C+A+J">C. A. J. Brew</a> , et al. (180 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2408.17391v2-abstract-short" style="display: inline;"> The broad physics reach of the LUX-ZEPLIN (LZ) experiment covers rare phenomena beyond the direct detection of dark matter. We report precise measurements of the extremely rare decay of $^{124}$Xe through the process of two-neutrino double electron capture (2$谓$2EC), utilizing a $1.39\,\mathrm{kg} \times \mathrm{yr}$ isotopic exposure from the first LZ science run. A half-life of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.17391v2-abstract-full').style.display = 'inline'; document.getElementById('2408.17391v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.17391v2-abstract-full" style="display: none;"> The broad physics reach of the LUX-ZEPLIN (LZ) experiment covers rare phenomena beyond the direct detection of dark matter. We report precise measurements of the extremely rare decay of $^{124}$Xe through the process of two-neutrino double electron capture (2$谓$2EC), utilizing a $1.39\,\mathrm{kg} \times \mathrm{yr}$ isotopic exposure from the first LZ science run. A half-life of $T_{1/2}^{2\nu2\mathrm{EC}} = (1.09 \pm 0.14_{\text{stat}} \pm 0.05_{\text{sys}}) \times 10^{22}\,\mathrm{yr}$ is observed with a statistical significance of $8.3\,蟽$, in agreement with literature. First empirical measurements of the KK capture fraction relative to other K-shell modes were conducted, and demonstrate consistency with respect to recent signal models at the $1.4\,蟽$ level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.17391v2-abstract-full').style.display = 'none'; document.getElementById('2408.17391v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">15 pages, 3 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J. Phys. G: Nucl. Part. Phys. 52 015103 (2025) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.14688">arXiv:2408.14688</a> <span> [<a href="https://arxiv.org/pdf/2408.14688">pdf</a>, <a href="https://arxiv.org/format/2408.14688">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Lowering threshold of NaI(Tl) scintillator to 0.7 keV in the COSINE-100 experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Yu%2C+G+H">G. H. Yu</a>, <a href="/search/physics?searchtype=author&query=Carlin%2C+N">N. Carlin</a>, <a href="/search/physics?searchtype=author&query=Cho%2C+J+Y">J. Y. Cho</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+J">J. J. Choi</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+S">S. Choi</a>, <a href="/search/physics?searchtype=author&query=Ezeribe%2C+A+C">A. C. Ezeribe</a>, <a href="/search/physics?searchtype=author&query=Fran%C3%A7a%2C+L+E">L. E. Fran莽a</a>, <a href="/search/physics?searchtype=author&query=Ha%2C+C">C. Ha</a>, <a href="/search/physics?searchtype=author&query=Hahn%2C+I+S">I. S. Hahn</a>, <a href="/search/physics?searchtype=author&query=Hollick%2C+S+J">S. J. Hollick</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+E+J">E. J. Jeon</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+H+W">H. W. Joo</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+W+G">W. G. Kang</a>, <a href="/search/physics?searchtype=author&query=Kauer%2C+M">M. Kauer</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+B+H">B. H. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+H+J">H. J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J">J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+K+W">K. W. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+H">S. H. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+K">S. K. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+W+K">W. K. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+D">Y. D. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+H">Y. H. Kim</a>, <a href="/search/physics?searchtype=author&query=Ko%2C+Y+J">Y. J. Ko</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+D+H">D. H. Lee</a> , et al. (34 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2408.14688v1-abstract-short" style="display: inline;"> COSINE-100 is a direct dark matter search experiment, with the primary goal of testing the annual modulation signal observed by DAMA/LIBRA, using the same target material, NaI(Tl). In previous analyses, we achieved the same 1 keV energy threshold used in the DAMA/LIBRA's analysis that reported an annual modulation signal with 11.6$蟽$ significance. In this article, we report an improved analysis th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.14688v1-abstract-full').style.display = 'inline'; document.getElementById('2408.14688v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.14688v1-abstract-full" style="display: none;"> COSINE-100 is a direct dark matter search experiment, with the primary goal of testing the annual modulation signal observed by DAMA/LIBRA, using the same target material, NaI(Tl). In previous analyses, we achieved the same 1 keV energy threshold used in the DAMA/LIBRA's analysis that reported an annual modulation signal with 11.6$蟽$ significance. In this article, we report an improved analysis that lowered the threshold to 0.7 keV, thanks to the application of Multi-Layer Perception network and a new likelihood parameter with waveforms in the frequency domain. The lower threshold would enable a better comparison of COSINE-100 with new DAMA results with a 0.75 keV threshold and account for differences in quenching factors. Furthermore the lower threshold can enhance COSINE-100's sensitivity to sub-GeV dark matter searches. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.14688v1-abstract-full').style.display = 'none'; document.getElementById('2408.14688v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.09806">arXiv:2408.09806</a> <span> [<a href="https://arxiv.org/pdf/2408.09806">pdf</a>, <a href="https://arxiv.org/format/2408.09806">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Improved background modeling for dark matter search with COSINE-100 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Yu%2C+G+H">G. H. Yu</a>, <a href="/search/physics?searchtype=author&query=Carlin%2C+N">N. Carlin</a>, <a href="/search/physics?searchtype=author&query=Cho%2C+J+Y">J. Y. Cho</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+J">J. J. Choi</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+S">S. Choi</a>, <a href="/search/physics?searchtype=author&query=Ezeribe%2C+A+C">A. C. Ezeribe</a>, <a href="/search/physics?searchtype=author&query=Franca%2C+L+E">L. E. Franca</a>, <a href="/search/physics?searchtype=author&query=Ha%2C+C">C. Ha</a>, <a href="/search/physics?searchtype=author&query=Hahn%2C+I+S">I. S. Hahn</a>, <a href="/search/physics?searchtype=author&query=Hollick%2C+S+J">S. J. Hollick</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+E+J">E. J. Jeon</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+H+W">H. W. Joo</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+W+G">W. G. Kang</a>, <a href="/search/physics?searchtype=author&query=Kauer%2C+M">M. Kauer</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+B+H">B. H. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+H+J">H. J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J">J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+K+W">K. W. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+H">S. H. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+K">S. K. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+W+K">W. K. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+D">Y. D. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+H">Y. H. Kim</a>, <a href="/search/physics?searchtype=author&query=Ko%2C+Y+J">Y. J. Ko</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+D+H">D. H. Lee</a> , et al. (33 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2408.09806v1-abstract-short" style="display: inline;"> COSINE-100 aims to conclusively test the claimed dark matter annual modulation signal detected by DAMA/LIBRA collaboration. DAMA/LIBRA has released updated analysis results by lowering the energy threshold to 0.75 keV through various upgrades. They have consistently claimed to have observed the annual modulation. In COSINE-100, it is crucial to lower the energy threshold for a direct comparison wi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.09806v1-abstract-full').style.display = 'inline'; document.getElementById('2408.09806v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.09806v1-abstract-full" style="display: none;"> COSINE-100 aims to conclusively test the claimed dark matter annual modulation signal detected by DAMA/LIBRA collaboration. DAMA/LIBRA has released updated analysis results by lowering the energy threshold to 0.75 keV through various upgrades. They have consistently claimed to have observed the annual modulation. In COSINE-100, it is crucial to lower the energy threshold for a direct comparison with DAMA/LIBRA, which also enhances the sensitivity of the search for low-mass dark matter, enabling COSINE-100 to explore this area. Therefore, it is essential to have a precise and quantitative understanding of the background spectrum across all energy ranges. This study expands the background modeling from 0.7 to 4000 keV using 2.82 years of COSINE-100 data. The modeling has been improved to describe the background spectrum across all energy ranges accurately. Assessments of the background spectrum are presented, considering the nonproportionality of NaI(Tl) crystals at both low and high energies and the characteristic X-rays produced by the interaction of external backgrounds with materials such as copper. Additionally, constraints on the fit parameters obtained from the alpha spectrum modeling fit are integrated into this model. These improvements are detailed in the paper. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.09806v1-abstract-full').style.display = 'none'; document.getElementById('2408.09806v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.01426">arXiv:2408.01426</a> <span> [<a href="https://arxiv.org/pdf/2408.01426">pdf</a>, <a href="https://arxiv.org/format/2408.01426">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Chemical Physics">physics.chem-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Machine Learning">cs.LG</span> </div> </div> <p class="title is-5 mathjax"> MolTRES: Improving Chemical Language Representation Learning for Molecular Property Prediction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Park%2C+J">Jun-Hyung Park</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Yeachan Kim</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+M">Mingyu Lee</a>, <a href="/search/physics?searchtype=author&query=Park%2C+H">Hyuntae Park</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+S">SangKeun Lee</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2408.01426v1-abstract-short" style="display: inline;"> Chemical representation learning has gained increasing interest due to the limited availability of supervised data in fields such as drug and materials design. This interest particularly extends to chemical language representation learning, which involves pre-training Transformers on SMILES sequences -- textual descriptors of molecules. Despite its success in molecular property prediction, current… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.01426v1-abstract-full').style.display = 'inline'; document.getElementById('2408.01426v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.01426v1-abstract-full" style="display: none;"> Chemical representation learning has gained increasing interest due to the limited availability of supervised data in fields such as drug and materials design. This interest particularly extends to chemical language representation learning, which involves pre-training Transformers on SMILES sequences -- textual descriptors of molecules. Despite its success in molecular property prediction, current practices often lead to overfitting and limited scalability due to early convergence. In this paper, we introduce a novel chemical language representation learning framework, called MolTRES, to address these issues. MolTRES incorporates generator-discriminator training, allowing the model to learn from more challenging examples that require structural understanding. In addition, we enrich molecular representations by transferring knowledge from scientific literature by integrating external materials embedding. Experimental results show that our model outperforms existing state-of-the-art models on popular molecular property prediction tasks. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.01426v1-abstract-full').style.display = 'none'; document.getElementById('2408.01426v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 5 figures, submitted to EMNLP 2024 main track</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">ACM Class:</span> I.2.7 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.17026">arXiv:2407.17026</a> <span> [<a href="https://arxiv.org/pdf/2407.17026">pdf</a>, <a href="https://arxiv.org/format/2407.17026">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Plasma Physics">physics.plasm-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3847/2041-8213/ad785c">10.3847/2041-8213/ad785c <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Nonlinear Alfv茅n-wave Dynamics and Premerger Emission from Crustal Oscillations in Neutron Star Mergers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Most%2C+E+R">Elias R. Most</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Yoonsoo Kim</a>, <a href="/search/physics?searchtype=author&query=Chatziioannou%2C+K">Katerina Chatziioannou</a>, <a href="/search/physics?searchtype=author&query=Legred%2C+I">Isaac Legred</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2407.17026v3-abstract-short" style="display: inline;"> Neutron stars have solid crusts threaded by strong magnetic fields. Perturbations in the crust can excite non-radial oscillations, which can in turn launch Alfven waves into the magnetosphere. In the case of a compact binary close to merger involving at least one neutron star, this can happen through tidal interactions causing resonant excitations that shatter the neutron star crust. We present th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.17026v3-abstract-full').style.display = 'inline'; document.getElementById('2407.17026v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.17026v3-abstract-full" style="display: none;"> Neutron stars have solid crusts threaded by strong magnetic fields. Perturbations in the crust can excite non-radial oscillations, which can in turn launch Alfven waves into the magnetosphere. In the case of a compact binary close to merger involving at least one neutron star, this can happen through tidal interactions causing resonant excitations that shatter the neutron star crust. We present the first numerical study that elucidates the dynamics of Alfven waves launched in a compact binary magnetosphere. We seed a magnetic field perturbation on the neutron star crust, which we then evolve in fully general-relativistic force-free electrodynamics using a GPU-based implementation. We show that Alfven waves steepen nonlinearly before reaching the orbital light cylinder, form flares, and dissipate energy in a transient current sheet. Our results predict radio and X-ray precursor emission from this process. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.17026v3-abstract-full').style.display = 'none'; document.getElementById('2407.17026v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">16 pages, 6 figures, version accepted by ApJL, changed title to match published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> ApJL 973 L37 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.12227">arXiv:2407.12227</a> <span> [<a href="https://arxiv.org/pdf/2407.12227">pdf</a>, <a href="https://arxiv.org/format/2407.12227">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Development of MMC-based lithium molybdate cryogenic calorimeters for AMoRE-II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Agrawal%2C+A">A. Agrawal</a>, <a href="/search/physics?searchtype=author&query=Alenkov%2C+V+V">V. V. Alenkov</a>, <a href="/search/physics?searchtype=author&query=Aryal%2C+P">P. Aryal</a>, <a href="/search/physics?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/physics?searchtype=author&query=Beyer%2C+J">J. Beyer</a>, <a href="/search/physics?searchtype=author&query=Bhandari%2C+B">B. Bhandari</a>, <a href="/search/physics?searchtype=author&query=Boiko%2C+R+S">R. S. Boiko</a>, <a href="/search/physics?searchtype=author&query=Boonin%2C+K">K. Boonin</a>, <a href="/search/physics?searchtype=author&query=Buzanov%2C+O">O. Buzanov</a>, <a href="/search/physics?searchtype=author&query=Byeon%2C+C+R">C. R. Byeon</a>, <a href="/search/physics?searchtype=author&query=Chanthima%2C+N">N. Chanthima</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M+K">M. K. Cheoun</a>, <a href="/search/physics?searchtype=author&query=Choe%2C+J+S">J. S. Choe</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+S">S. Choi</a>, <a href="/search/physics?searchtype=author&query=Choudhury%2C+S">S. Choudhury</a>, <a href="/search/physics?searchtype=author&query=Chung%2C+J+S">J. S. Chung</a>, <a href="/search/physics?searchtype=author&query=Danevich%2C+F+A">F. A. Danevich</a>, <a href="/search/physics?searchtype=author&query=Djamal%2C+M">M. Djamal</a>, <a href="/search/physics?searchtype=author&query=Drung%2C+D">D. Drung</a>, <a href="/search/physics?searchtype=author&query=Enss%2C+C">C. Enss</a>, <a href="/search/physics?searchtype=author&query=Fleischmann%2C+A">A. Fleischmann</a>, <a href="/search/physics?searchtype=author&query=Gangapshev%2C+A+M">A. M. Gangapshev</a>, <a href="/search/physics?searchtype=author&query=Gastaldo%2C+L">L. Gastaldo</a>, <a href="/search/physics?searchtype=author&query=Gavrilyuk%2C+Y+M">Y. M. Gavrilyuk</a>, <a href="/search/physics?searchtype=author&query=Gezhaev%2C+A+M">A. M. Gezhaev</a> , et al. (84 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2407.12227v1-abstract-short" style="display: inline;"> The AMoRE collaboration searches for neutrinoless double beta decay of $^{100}$Mo using molybdate scintillating crystals via low temperature thermal calorimetric detection. The early phases of the experiment, AMoRE-pilot and AMoRE-I, have demonstrated competitive discovery potential. Presently, the AMoRE-II experiment, featuring a large detector array with about 90 kg of $^{100}$Mo isotope, is und… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.12227v1-abstract-full').style.display = 'inline'; document.getElementById('2407.12227v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.12227v1-abstract-full" style="display: none;"> The AMoRE collaboration searches for neutrinoless double beta decay of $^{100}$Mo using molybdate scintillating crystals via low temperature thermal calorimetric detection. The early phases of the experiment, AMoRE-pilot and AMoRE-I, have demonstrated competitive discovery potential. Presently, the AMoRE-II experiment, featuring a large detector array with about 90 kg of $^{100}$Mo isotope, is under construction.This paper discusses the baseline design and characterization of the lithium molybdate cryogenic calorimeters to be used in the AMoRE-II detector modules. The results from prototype setups that incorporate new housing structures and two different crystal masses (316 g and 517 - 521 g), operated at 10 mK temperature, show energy resolutions (FWHM) of 7.55 - 8.82 keV at the 2.615 MeV $^{208}$Tl $纬$ line, and effective light detection of 0.79 - 0.96 keV/MeV. The simultaneous heat and light detection enables clear separation of alpha particles with a discrimination power of 12.37 - 19.50 at the energy region around $^6$Li(n, $伪$)$^3$H with Q-value = 4.785 MeV. Promising detector performances were demonstrated at temperatures as high as 30 mK, which relaxes the temperature constraints for operating the large AMoRE-II array. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.12227v1-abstract-full').style.display = 'none'; document.getElementById('2407.12227v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.11276">arXiv:2407.11276</a> <span> [<a href="https://arxiv.org/pdf/2407.11276">pdf</a>, <a href="https://arxiv.org/format/2407.11276">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Biological Physics">physics.bio-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1063/5.0228845">10.1063/5.0228845 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A practical approach to calculating magnetic Johnson noise for precision measurements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Phan%2C+N+S">N. S. Phan</a>, <a href="/search/physics?searchtype=author&query=Clayton%2C+S+M">S. M. Clayton</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+J">Y. J. Kim</a>, <a href="/search/physics?searchtype=author&query=Ito%2C+T+M">T. M. Ito</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2407.11276v2-abstract-short" style="display: inline;"> Magnetic Johnson noise is an important consideration for many applications involving precision magnetometry, and its significance will only increase in the future with improvements in measurement sensitivity. The fluctuation-dissipation theorem can be utilized to derive analytic expressions for magnetic Johnson noise in certain situations. But when used in conjunction with finite element analysis… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.11276v2-abstract-full').style.display = 'inline'; document.getElementById('2407.11276v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.11276v2-abstract-full" style="display: none;"> Magnetic Johnson noise is an important consideration for many applications involving precision magnetometry, and its significance will only increase in the future with improvements in measurement sensitivity. The fluctuation-dissipation theorem can be utilized to derive analytic expressions for magnetic Johnson noise in certain situations. But when used in conjunction with finite element analysis tools, the combined approach is particularly powerful as it provides a practical means to calculate the magnetic Johnson noise arising from conductors of arbitrary geometry and permeability. In this paper, we demonstrate this method to be one of the most comprehensive approaches presently available to calculate thermal magnetic noise. In particular, its applicability is shown to not be limited to cases where the noise is evaluated at a point in space but also can be expanded to include cases where the magnetic field detector has a more general shape, such as a finite size loop, a gradiometer, or a detector that consists of a polarized atomic species trapped in a volume. Furthermore, some physics insights gained through studies made using this method are discussed <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.11276v2-abstract-full').style.display = 'none'; document.getElementById('2407.11276v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LA-UR-24-27277 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J. Appl. Phys. 136, 124901 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.07343">arXiv:2407.07343</a> <span> [<a href="https://arxiv.org/pdf/2407.07343">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> </div> </div> <p class="title is-5 mathjax"> Electrically Tuning Quasi-Bound States in the Continuum with Hybrid Graphene-Silicon Metasurfaces </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Cai%2C+Z">Ziqiang Cai</a>, <a href="/search/physics?searchtype=author&query=Zhang%2C+X">Xianzhe Zhang</a>, <a href="/search/physics?searchtype=author&query=Karnik%2C+T+S">Tushar Sanjay Karnik</a>, <a href="/search/physics?searchtype=author&query=Xu%2C+Y">Yihao Xu</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+T+Y">Tae Yoon Kim</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J">Juejun Hu</a>, <a href="/search/physics?searchtype=author&query=Liu%2C+Y">Yongmin Liu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2407.07343v1-abstract-short" style="display: inline;"> Metasurfaces have become one of the most prominent research topics in the field of optics owing to their unprecedented properties and novel applications on an ultrathin platform. By combining graphene with metasurfaces, electrical tunable functions can be achieved with fast tuning speed, large modulation depth and broad tuning range. However, the tuning efficiency of hybrid graphene metasurfaces w… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.07343v1-abstract-full').style.display = 'inline'; document.getElementById('2407.07343v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.07343v1-abstract-full" style="display: none;"> Metasurfaces have become one of the most prominent research topics in the field of optics owing to their unprecedented properties and novel applications on an ultrathin platform. By combining graphene with metasurfaces, electrical tunable functions can be achieved with fast tuning speed, large modulation depth and broad tuning range. However, the tuning efficiency of hybrid graphene metasurfaces within the short-wavelength infrared (SWIR) spectrum is typically low because of the small resonance wavelength shift in this wavelength range. In this work, through the integration of graphene and silicon metasurfaces that support quasi-bound states in the continuum (quasi-BIC), we experimentally demonstrate significant transmittance tuning even with less than 30 nm resonance wavelength shift thanks to the high quality-factor of quasi-BIC metasurfaces. The tunable transmittance spectrum was measured using Fourier Transform Infrared Spectroscopy (FTIR) with a modified reflective lens to improve the accuracy, and the electrical tuning was realized utilizing the cut-and-stick method of ion gel. At the wavelength of 3.0 um, the measured change of transmittance T_max-T_min and modulation depth (T_max-T_min)/T_max can reach 22.2% and 28.9%, respectively, under a small bias voltage ranging from -2 V to +2 V. To the best of our knowledge, this work is the first experimental demonstration of tunable graphene/quasi-BIC metasurfaces, which have potential applications in optical modulation, reconfigurable photonic devices, and optical communications. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.07343v1-abstract-full').style.display = 'none'; document.getElementById('2407.07343v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, 5 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.13134">arXiv:2406.13134</a> <span> [<a href="https://arxiv.org/pdf/2406.13134">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Plasma Physics">physics.plasm-ph</span> </div> </div> <p class="title is-5 mathjax"> Mode Coupling and Breathing Oscillation in Partially Magnetized Cross-Field Plasmas </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Park%2C+J+Y">Jong Yoon Park</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+Y">June Young Kim</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2406.13134v1-abstract-short" style="display: inline;"> We report on investigations of mode coupling between rotating spokes during the onset of the breathing oscillation. Demonstrating the existence of nonlinear coupling between the sporadic spokes and the breathing oscillation, we suggest the oscillating azimuthal electric field as the energy source for additional ionization within the plasma. Our results indicate that intermittent three-wave couplin… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.13134v1-abstract-full').style.display = 'inline'; document.getElementById('2406.13134v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.13134v1-abstract-full" style="display: none;"> We report on investigations of mode coupling between rotating spokes during the onset of the breathing oscillation. Demonstrating the existence of nonlinear coupling between the sporadic spokes and the breathing oscillation, we suggest the oscillating azimuthal electric field as the energy source for additional ionization within the plasma. Our results indicate that intermittent three-wave coupling is a possible mechanism for triggering low-frequency breathing oscillations in partially magnetized cross-field plasma. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.13134v1-abstract-full').style.display = 'none'; document.getElementById('2406.13134v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.12904">arXiv:2406.12904</a> <span> [<a href="https://arxiv.org/pdf/2406.12904">pdf</a>, <a href="https://arxiv.org/format/2406.12904">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Machine Learning">cs.LG</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Computational Physics">physics.comp-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> </div> <p class="title is-5 mathjax"> Meent: Differentiable Electromagnetic Simulator for Machine Learning </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Yongha Kim</a>, <a href="/search/physics?searchtype=author&query=Jung%2C+A+W">Anthony W. Jung</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S">Sanmun Kim</a>, <a href="/search/physics?searchtype=author&query=Octavian%2C+K">Kevin Octavian</a>, <a href="/search/physics?searchtype=author&query=Heo%2C+D">Doyoung Heo</a>, <a href="/search/physics?searchtype=author&query=Park%2C+C">Chaejin Park</a>, <a href="/search/physics?searchtype=author&query=Shin%2C+J">Jeongmin Shin</a>, <a href="/search/physics?searchtype=author&query=Nam%2C+S">Sunghyun Nam</a>, <a href="/search/physics?searchtype=author&query=Park%2C+C">Chanhyung Park</a>, <a href="/search/physics?searchtype=author&query=Park%2C+J">Juho Park</a>, <a href="/search/physics?searchtype=author&query=Han%2C+S">Sangjun Han</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+J">Jinmyoung Lee</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S">Seolho Kim</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+M+S">Min Seok Jang</a>, <a href="/search/physics?searchtype=author&query=Park%2C+C+Y">Chan Y. Park</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2406.12904v1-abstract-short" style="display: inline;"> Electromagnetic (EM) simulation plays a crucial role in analyzing and designing devices with sub-wavelength scale structures such as solar cells, semiconductor devices, image sensors, future displays and integrated photonic devices. Specifically, optics problems such as estimating semiconductor device structures and designing nanophotonic devices provide intriguing research topics with far-reachin… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.12904v1-abstract-full').style.display = 'inline'; document.getElementById('2406.12904v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.12904v1-abstract-full" style="display: none;"> Electromagnetic (EM) simulation plays a crucial role in analyzing and designing devices with sub-wavelength scale structures such as solar cells, semiconductor devices, image sensors, future displays and integrated photonic devices. Specifically, optics problems such as estimating semiconductor device structures and designing nanophotonic devices provide intriguing research topics with far-reaching real world impact. Traditional algorithms for such tasks require iteratively refining parameters through simulations, which often yield sub-optimal results due to the high computational cost of both the algorithms and EM simulations. Machine learning (ML) emerged as a promising candidate to mitigate these challenges, and optics research community has increasingly adopted ML algorithms to obtain results surpassing classical methods across various tasks. To foster a synergistic collaboration between the optics and ML communities, it is essential to have an EM simulation software that is user-friendly for both research communities. To this end, we present Meent, an EM simulation software that employs rigorous coupled-wave analysis (RCWA). Developed in Python and equipped with automatic differentiation (AD) capabilities, Meent serves as a versatile platform for integrating ML into optics research and vice versa. To demonstrate its utility as a research platform, we present three applications of Meent: 1) generating a dataset for training neural operator, 2) serving as an environment for the reinforcement learning of nanophotonic device optimization, and 3) providing a solution for inverse problems with gradient-based optimizers. These applications highlight Meent's potential to advance both EM simulation and ML methodologies. The code is available at https://github.com/kc-ml2/meent with the MIT license to promote the cross-polinations of ideas among academic researchers and industry practitioners. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.12904v1-abstract-full').style.display = 'none'; document.getElementById('2406.12904v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">under review</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.12874">arXiv:2406.12874</a> <span> [<a href="https://arxiv.org/pdf/2406.12874">pdf</a>, <a href="https://arxiv.org/format/2406.12874">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/19/08/P08027">10.1088/1748-0221/19/08/P08027 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Design, Implementation, and Performance of the LZ Calibration Systems </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Aalbers%2C+J">J. Aalbers</a>, <a href="/search/physics?searchtype=author&query=Akerib%2C+D+S">D. S. Akerib</a>, <a href="/search/physics?searchtype=author&query=Musalhi%2C+A+K+A">A. K. Al Musalhi</a>, <a href="/search/physics?searchtype=author&query=Alder%2C+F">F. Alder</a>, <a href="/search/physics?searchtype=author&query=Amarasinghe%2C+C+S">C. S. Amarasinghe</a>, <a href="/search/physics?searchtype=author&query=Ames%2C+A">A. Ames</a>, <a href="/search/physics?searchtype=author&query=Anderson%2C+T+J">T. J. Anderson</a>, <a href="/search/physics?searchtype=author&query=Angelides%2C+N">N. Angelides</a>, <a href="/search/physics?searchtype=author&query=Ara%C3%BAjo%2C+H+M">H. M. Ara煤jo</a>, <a href="/search/physics?searchtype=author&query=Armstrong%2C+J+E">J. E. Armstrong</a>, <a href="/search/physics?searchtype=author&query=Arthurs%2C+M">M. Arthurs</a>, <a href="/search/physics?searchtype=author&query=Baker%2C+A">A. Baker</a>, <a href="/search/physics?searchtype=author&query=Balashov%2C+S">S. Balashov</a>, <a href="/search/physics?searchtype=author&query=Bang%2C+J">J. Bang</a>, <a href="/search/physics?searchtype=author&query=Barillier%2C+E+E">E. E. Barillier</a>, <a href="/search/physics?searchtype=author&query=Bargemann%2C+J+W">J. W. Bargemann</a>, <a href="/search/physics?searchtype=author&query=Beattie%2C+K">K. Beattie</a>, <a href="/search/physics?searchtype=author&query=Benson%2C+T">T. Benson</a>, <a href="/search/physics?searchtype=author&query=Bhatti%2C+A">A. Bhatti</a>, <a href="/search/physics?searchtype=author&query=Biekert%2C+A">A. Biekert</a>, <a href="/search/physics?searchtype=author&query=Biesiadzinski%2C+T+P">T. P. Biesiadzinski</a>, <a href="/search/physics?searchtype=author&query=Birch%2C+H+J">H. J. Birch</a>, <a href="/search/physics?searchtype=author&query=Bishop%2C+E">E. Bishop</a>, <a href="/search/physics?searchtype=author&query=Blockinger%2C+G+M">G. M. Blockinger</a>, <a href="/search/physics?searchtype=author&query=Boxer%2C+B">B. Boxer</a> , et al. (179 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2406.12874v3-abstract-short" style="display: inline;"> LUX-ZEPLIN (LZ) is a tonne-scale experiment searching for direct dark matter interactions and other rare events. It is located at the Sanford Underground Research Facility (SURF) in Lead, South Dakota, USA. The core of the LZ detector is a dual-phase xenon time projection chamber (TPC), designed with the primary goal of detecting Weakly Interacting Massive Particles (WIMPs) via their induced low e… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.12874v3-abstract-full').style.display = 'inline'; document.getElementById('2406.12874v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.12874v3-abstract-full" style="display: none;"> LUX-ZEPLIN (LZ) is a tonne-scale experiment searching for direct dark matter interactions and other rare events. It is located at the Sanford Underground Research Facility (SURF) in Lead, South Dakota, USA. The core of the LZ detector is a dual-phase xenon time projection chamber (TPC), designed with the primary goal of detecting Weakly Interacting Massive Particles (WIMPs) via their induced low energy nuclear recoils. Surrounding the TPC, two veto detectors immersed in an ultra-pure water tank enable reducing background events to enhance the discovery potential. Intricate calibration systems are purposely designed to precisely understand the responses of these three detector volumes to various types of particle interactions and to demonstrate LZ's ability to discriminate between signals and backgrounds. In this paper, we present a comprehensive discussion of the key features, requirements, and performance of the LZ calibration systems, which play a crucial role in enabling LZ's WIMP-search and its broad science program. The thorough description of these calibration systems, with an emphasis on their novel aspects, is valuable for future calibration efforts in direct dark matter and other rare-event search experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.12874v3-abstract-full').style.display = 'none'; document.getElementById('2406.12874v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 19 P08027 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.09698">arXiv:2406.09698</a> <span> [<a href="https://arxiv.org/pdf/2406.09698">pdf</a>, <a href="https://arxiv.org/format/2406.09698">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Projected background and sensitivity of AMoRE-II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Agrawal%2C+A">A. Agrawal</a>, <a href="/search/physics?searchtype=author&query=Alenkov%2C+V+V">V. V. Alenkov</a>, <a href="/search/physics?searchtype=author&query=Aryal%2C+P">P. Aryal</a>, <a href="/search/physics?searchtype=author&query=Beyer%2C+J">J. Beyer</a>, <a href="/search/physics?searchtype=author&query=Bhandari%2C+B">B. Bhandari</a>, <a href="/search/physics?searchtype=author&query=Boiko%2C+R+S">R. S. Boiko</a>, <a href="/search/physics?searchtype=author&query=Boonin%2C+K">K. Boonin</a>, <a href="/search/physics?searchtype=author&query=Buzanov%2C+O">O. Buzanov</a>, <a href="/search/physics?searchtype=author&query=Byeon%2C+C+R">C. R. Byeon</a>, <a href="/search/physics?searchtype=author&query=Chanthima%2C+N">N. Chanthima</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M+K">M. K. Cheoun</a>, <a href="/search/physics?searchtype=author&query=Choe%2C+J+S">J. S. Choe</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+S">Seonho Choi</a>, <a href="/search/physics?searchtype=author&query=Choudhury%2C+S">S. Choudhury</a>, <a href="/search/physics?searchtype=author&query=Chung%2C+J+S">J. S. Chung</a>, <a href="/search/physics?searchtype=author&query=Danevich%2C+F+A">F. A. Danevich</a>, <a href="/search/physics?searchtype=author&query=Djamal%2C+M">M. Djamal</a>, <a href="/search/physics?searchtype=author&query=Drung%2C+D">D. Drung</a>, <a href="/search/physics?searchtype=author&query=Enss%2C+C">C. Enss</a>, <a href="/search/physics?searchtype=author&query=Fleischmann%2C+A">A. Fleischmann</a>, <a href="/search/physics?searchtype=author&query=Gangapshev%2C+A+M">A. M. Gangapshev</a>, <a href="/search/physics?searchtype=author&query=Gastaldo%2C+L">L. Gastaldo</a>, <a href="/search/physics?searchtype=author&query=Gavrilyuk%2C+Y+M">Y. M. Gavrilyuk</a>, <a href="/search/physics?searchtype=author&query=Gezhaev%2C+A+M">A. M. Gezhaev</a>, <a href="/search/physics?searchtype=author&query=Gileva%2C+O">O. Gileva</a> , et al. (81 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2406.09698v2-abstract-short" style="display: inline;"> AMoRE-II aims to search for neutrinoless double beta decay with an array of 423 Li$_2$$^{100}$MoO$_4$ crystals operating in the cryogenic system as the main phase of the Advanced Molybdenum-based Rare process Experiment (AMoRE). AMoRE has been planned to operate in three phases: AMoRE-pilot, AMoRE-I, and AMoRE-II. AMoRE-II is currently being installed at the Yemi Underground Laboratory, located ap… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.09698v2-abstract-full').style.display = 'inline'; document.getElementById('2406.09698v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.09698v2-abstract-full" style="display: none;"> AMoRE-II aims to search for neutrinoless double beta decay with an array of 423 Li$_2$$^{100}$MoO$_4$ crystals operating in the cryogenic system as the main phase of the Advanced Molybdenum-based Rare process Experiment (AMoRE). AMoRE has been planned to operate in three phases: AMoRE-pilot, AMoRE-I, and AMoRE-II. AMoRE-II is currently being installed at the Yemi Underground Laboratory, located approximately 1000 meters deep in Jeongseon, Korea. The goal of AMoRE-II is to reach up to $T^{0谓尾尾}_{1/2}$ $\sim$ 6 $\times$ 10$^{26}$ years, corresponding to an effective Majorana mass of 15 - 29 meV, covering all the inverted mass hierarchy regions. To achieve this, the background level of the experimental configurations and possible background sources of gamma and beta events should be well understood. We have intensively performed Monte Carlo simulations using the GEANT4 toolkit in all the experimental configurations with potential sources. We report the estimated background level that meets the 10$^{-4}$counts/(keV$\cdot$kg$\cdot$yr) requirement for AMoRE-II in the region of interest (ROI) and show the projected half-life sensitivity based on the simulation study. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.09698v2-abstract-full').style.display = 'none'; document.getElementById('2406.09698v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.05703">arXiv:2406.05703</a> <span> [<a href="https://arxiv.org/pdf/2406.05703">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Strongly Correlated Electrons">cond-mat.str-el</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> </div> <p class="title is-5 mathjax"> Good plasmons in a bad metal </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ruta%2C+F+L">Francesco L. Ruta</a>, <a href="/search/physics?searchtype=author&query=Shao%2C+Y">Yinming Shao</a>, <a href="/search/physics?searchtype=author&query=Acharya%2C+S">Swagata Acharya</a>, <a href="/search/physics?searchtype=author&query=Mu%2C+A">Anqi Mu</a>, <a href="/search/physics?searchtype=author&query=Jo%2C+N+H">Na Hyun Jo</a>, <a href="/search/physics?searchtype=author&query=Ryu%2C+S+H">Sae Hee Ryu</a>, <a href="/search/physics?searchtype=author&query=Balatsky%2C+D">Daria Balatsky</a>, <a href="/search/physics?searchtype=author&query=Pashov%2C+D">Dimitar Pashov</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+B+S+Y">Brian S. Y. Kim</a>, <a href="/search/physics?searchtype=author&query=Katsnelson%2C+M+I">Mikhail I. Katsnelson</a>, <a href="/search/physics?searchtype=author&query=Analytis%2C+J+G">James G. Analytis</a>, <a href="/search/physics?searchtype=author&query=Rotenberg%2C+E">Eli Rotenberg</a>, <a href="/search/physics?searchtype=author&query=Millis%2C+A+J">Andrew J. Millis</a>, <a href="/search/physics?searchtype=author&query=van+Schilfgaarde%2C+M">Mark van Schilfgaarde</a>, <a href="/search/physics?searchtype=author&query=Basov%2C+D+N">D. N. Basov</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2406.05703v1-abstract-short" style="display: inline;"> Correlated materials may exhibit unusually high resistivity increasing linearly in temperature, breaking through the Mott-Ioffe-Regel bound, above which coherent quasiparticles are destroyed. The fate of collective charge excitations, or plasmons, in these systems is a subject of debate. Several studies suggest plasmons are overdamped while others detect unrenormalized plasmons. Here, we present d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.05703v1-abstract-full').style.display = 'inline'; document.getElementById('2406.05703v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.05703v1-abstract-full" style="display: none;"> Correlated materials may exhibit unusually high resistivity increasing linearly in temperature, breaking through the Mott-Ioffe-Regel bound, above which coherent quasiparticles are destroyed. The fate of collective charge excitations, or plasmons, in these systems is a subject of debate. Several studies suggest plasmons are overdamped while others detect unrenormalized plasmons. Here, we present direct optical images of low-loss hyperbolic plasmon polaritons (HPPs) in the correlated van der Waals metal MoOCl2. HPPs are plasmon-photon modes that waveguide through extremely anisotropic media and are remarkably long-lived in MoOCl2. Many-body theory supported by photoemission results reveals that MoOCl2 is in an orbital-selective and highly incoherent Peierls phase. Different orbitals acquire markedly different bonding-antibonding character, producing a highly-anisotropic, isolated Fermi surface. The Fermi surface is further reconstructed and made partly incoherent by electronic interactions, renormalizing the plasma frequency. HPPs remain long-lived in spite of this, allowing us to uncover previously unseen imprints of electronic correlations on plasmonic collective modes. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.05703v1-abstract-full').style.display = 'none'; document.getElementById('2406.05703v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">32 pages, 16 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.01963">arXiv:2406.01963</a> <span> [<a href="https://arxiv.org/pdf/2406.01963">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> </div> </div> <p class="title is-5 mathjax"> Diamond molecular balance: Revolutionizing high-resolution mass spectrometry from MDa to TDa at room temperature </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lee%2C+D">Donggeun Lee</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+S">Seung-Woo Jeon</a>, <a href="/search/physics?searchtype=author&query=Yi%2C+C">Chang-Hwan Yi</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Yang-Hee Kim</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+Y">Yeeun Choi</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+S">Sang-Hun Lee</a>, <a href="/search/physics?searchtype=author&query=Cha%2C+J">Jinwoong Cha</a>, <a href="/search/physics?searchtype=author&query=Shim%2C+S">Seung-Bo Shim</a>, <a href="/search/physics?searchtype=author&query=Suh%2C+J">Junho Suh</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+I">Il-Young Kim</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+D+D">Dongyeon Daniel Kang</a>, <a href="/search/physics?searchtype=author&query=Jung%2C+H">Hojoong Jung</a>, <a href="/search/physics?searchtype=author&query=Jeong%2C+C">Cherlhyun Jeong</a>, <a href="/search/physics?searchtype=author&query=Ahn%2C+J">Jae-pyoung Ahn</a>, <a href="/search/physics?searchtype=author&query=Park%2C+H+C">Hee Chul Park</a>, <a href="/search/physics?searchtype=author&query=Han%2C+S">Sang-Wook Han</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+C">Chulki Kim</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2406.01963v3-abstract-short" style="display: inline;"> The significance of mass spectrometry lies in its unparalleled ability to accurately identify and quantify molecules in complex samples, providing invaluable insights into molecular structures and interactions. Here, we leverage diamond nanostructures as highly sensitive mass sensors by utilizing a self-excitation mechanism under an electron beam in a conventional scanning electron microscope (SEM… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.01963v3-abstract-full').style.display = 'inline'; document.getElementById('2406.01963v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.01963v3-abstract-full" style="display: none;"> The significance of mass spectrometry lies in its unparalleled ability to accurately identify and quantify molecules in complex samples, providing invaluable insights into molecular structures and interactions. Here, we leverage diamond nanostructures as highly sensitive mass sensors by utilizing a self-excitation mechanism under an electron beam in a conventional scanning electron microscope (SEM). The diamond molecular balance (DMB) exhibits an exceptional mass resolution of 0.36 MDa, based on its outstanding mechanical quality factor and frequency stability, along with an extensive dynamic range from MDa to TDa. This positions the DMB at the forefront of molecular balances operating at room temperature. Notably, the DMB demonstrates its ability to measure the mass of a single bacteriophage T4 by precisely locating the analyte on the device. These findings highlight the groundbreaking potential of the DMB as a revolutionary tool for mass spectrometry at room temperature. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.01963v3-abstract-full').style.display = 'none'; document.getElementById('2406.01963v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">16 pages, 4 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.18668">arXiv:2405.18668</a> <span> [<a href="https://arxiv.org/pdf/2405.18668">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1021/acsnano.4c00181">10.1021/acsnano.4c00181 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Gate-Tunable Multi-Band van der Waals Photodetector and Polarization Sensor </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Shen%2C+D">Daozhi Shen</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+H">HeeBong Yang</a>, <a href="/search/physics?searchtype=author&query=Patel%2C+T">Tarun Patel</a>, <a href="/search/physics?searchtype=author&query=Rhodes%2C+D+A">Daniel A. Rhodes</a>, <a href="/search/physics?searchtype=author&query=Timusk%2C+T">Thomas Timusk</a>, <a href="/search/physics?searchtype=author&query=Zhou%2C+Y+N">Y. Norman Zhou</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+N+Y">Na Young Kim</a>, <a href="/search/physics?searchtype=author&query=Tsen%2C+A+W">Adam W. Tsen</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.18668v1-abstract-short" style="display: inline;"> A single photodetector with tunable detection wavelengths and polarization sensitivity can potentially be harnessed for diverse optical applications ranging from imaging and sensing to telecommunications. Such a device will require the combination of multiple material systems with different structures, bandgaps, and photoelectrical responses, which is extremely difficult to engineer using traditio… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.18668v1-abstract-full').style.display = 'inline'; document.getElementById('2405.18668v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.18668v1-abstract-full" style="display: none;"> A single photodetector with tunable detection wavelengths and polarization sensitivity can potentially be harnessed for diverse optical applications ranging from imaging and sensing to telecommunications. Such a device will require the combination of multiple material systems with different structures, bandgaps, and photoelectrical responses, which is extremely difficult to engineer using traditional epitaxial films. Here, we develop a multi-functional and high-performance photosensor using all van der Waals materials. The device features a gate-tunable spectral response that is switchable between near-infrared/visible and short-/mid-wave infrared, as well as broadband operation, at room temperature. The linear polarization sensitivity in the telecommunications O-band can also be directly modulated between horizontal, vertical, and nonpolarizing modes. These effects originate from the balance of photocurrent generation in two of the active layers that can be manipulated by an electric field. The photodetector features high detectivity (>109 cmHz1/2W-1) together with fast operation speed (~ 1 MHz) and can be further exploited for dual visible and infrared imaging. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.18668v1-abstract-full').style.display = 'none'; document.getElementById('2405.18668v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages,16 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> ACS Nano 18 (2024) 11193-11199 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.16861">arXiv:2405.16861</a> <span> [<a href="https://arxiv.org/pdf/2405.16861">pdf</a>, <a href="https://arxiv.org/format/2405.16861">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Biomolecules">q-bio.BM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Machine Learning">cs.LG</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Biological Physics">physics.bio-ph</span> </div> </div> <p class="title is-5 mathjax"> BInD: Bond and Interaction-generating Diffusion Model for Multi-objective Structure-based Drug Design </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lee%2C+J">Joongwon Lee</a>, <a href="/search/physics?searchtype=author&query=Zhung%2C+W">Wonho Zhung</a>, <a href="/search/physics?searchtype=author&query=Seo%2C+J">Jisu Seo</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+W+Y">Woo Youn Kim</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.16861v2-abstract-short" style="display: inline;"> A remarkable advance in geometric deep generative models with accumulated structural data enables structure-based drug design (SBDD) with target protein information only. However, most existing models struggle to address multi-objectives simultaneously while performing well only in their specialized tasks. Here, we present BInD, a diffusion model with knowledge-based guidance for multi-objective S… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.16861v2-abstract-full').style.display = 'inline'; document.getElementById('2405.16861v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.16861v2-abstract-full" style="display: none;"> A remarkable advance in geometric deep generative models with accumulated structural data enables structure-based drug design (SBDD) with target protein information only. However, most existing models struggle to address multi-objectives simultaneously while performing well only in their specialized tasks. Here, we present BInD, a diffusion model with knowledge-based guidance for multi-objective SBDD. BInD is designed to co-generate molecules and their interactions with a target protein to consider all key objectives equally well, including target-specific interactions, molecular properties, and local geometry. Comprehensive evaluations show that BInD achieves robust performance for all objectives while outperforming or matching state-of-the-art methods for each. Finally, we propose a train-free optimization method empowered by retrieving target-specific interactions, highlighting the role of non-covalent interactions in achieving higher selectivity and binding affinities to a target protein. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.16861v2-abstract-full').style.display = 'none'; document.getElementById('2405.16861v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.14732">arXiv:2405.14732</a> <span> [<a href="https://arxiv.org/pdf/2405.14732">pdf</a>, <a href="https://arxiv.org/format/2405.14732">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> The Data Acquisition System of the LZ Dark Matter Detector: FADR </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Aalbers%2C+J">J. Aalbers</a>, <a href="/search/physics?searchtype=author&query=Akerib%2C+D+S">D. S. Akerib</a>, <a href="/search/physics?searchtype=author&query=Musalhi%2C+A+K+A">A. K. Al Musalhi</a>, <a href="/search/physics?searchtype=author&query=Alder%2C+F">F. Alder</a>, <a href="/search/physics?searchtype=author&query=Amarasinghe%2C+C+S">C. S. Amarasinghe</a>, <a href="/search/physics?searchtype=author&query=Ames%2C+A">A. Ames</a>, <a href="/search/physics?searchtype=author&query=Anderson%2C+T+J">T. J. Anderson</a>, <a href="/search/physics?searchtype=author&query=Angelides%2C+N">N. Angelides</a>, <a href="/search/physics?searchtype=author&query=Ara%C3%BAjo%2C+H+M">H. M. Ara煤jo</a>, <a href="/search/physics?searchtype=author&query=Armstrong%2C+J+E">J. E. Armstrong</a>, <a href="/search/physics?searchtype=author&query=Arthurs%2C+M">M. Arthurs</a>, <a href="/search/physics?searchtype=author&query=Baker%2C+A">A. Baker</a>, <a href="/search/physics?searchtype=author&query=Balashov%2C+S">S. Balashov</a>, <a href="/search/physics?searchtype=author&query=Bang%2C+J">J. Bang</a>, <a href="/search/physics?searchtype=author&query=Barillier%2C+E+E">E. E. Barillier</a>, <a href="/search/physics?searchtype=author&query=Bargemann%2C+J+W">J. W. Bargemann</a>, <a href="/search/physics?searchtype=author&query=Beattie%2C+K">K. Beattie</a>, <a href="/search/physics?searchtype=author&query=Benson%2C+T">T. Benson</a>, <a href="/search/physics?searchtype=author&query=Bhatti%2C+A">A. Bhatti</a>, <a href="/search/physics?searchtype=author&query=Biekert%2C+A">A. Biekert</a>, <a href="/search/physics?searchtype=author&query=Biesiadzinski%2C+T+P">T. P. Biesiadzinski</a>, <a href="/search/physics?searchtype=author&query=Birch%2C+H+J">H. J. Birch</a>, <a href="/search/physics?searchtype=author&query=Bishop%2C+E">E. Bishop</a>, <a href="/search/physics?searchtype=author&query=Blockinger%2C+G+M">G. M. Blockinger</a>, <a href="/search/physics?searchtype=author&query=Boxer%2C+B">B. Boxer</a> , et al. (191 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.14732v3-abstract-short" style="display: inline;"> The Data Acquisition System (DAQ) for the LUX-ZEPLIN (LZ) dark matter detector is described. The signals from 745 PMTs, distributed across three subsystems, are sampled with 100-MHz 32-channel digitizers (DDC-32s). A basic waveform analysis is carried out on the on-board Field Programmable Gate Arrays (FPGAs) to extract information about the observed scintillation and electroluminescence signals.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.14732v3-abstract-full').style.display = 'inline'; document.getElementById('2405.14732v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.14732v3-abstract-full" style="display: none;"> The Data Acquisition System (DAQ) for the LUX-ZEPLIN (LZ) dark matter detector is described. The signals from 745 PMTs, distributed across three subsystems, are sampled with 100-MHz 32-channel digitizers (DDC-32s). A basic waveform analysis is carried out on the on-board Field Programmable Gate Arrays (FPGAs) to extract information about the observed scintillation and electroluminescence signals. This information is used to determine if the digitized waveforms should be preserved for offline analysis. The system is designed around the Kintex-7 FPGA. In addition to digitizing the PMT signals and providing basic event selection in real time, the flexibility provided by the use of FPGAs allows us to monitor the performance of the detector and the DAQ in parallel to normal data acquisition. The hardware and software/firmware of this FPGA-based Architecture for Data acquisition and Realtime monitoring (FADR) are discussed and performance measurements are described. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.14732v3-abstract-full').style.display = 'none'; document.getElementById('2405.14732v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages, 24 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.05961">arXiv:2405.05961</a> <span> [<a href="https://arxiv.org/pdf/2405.05961">pdf</a>, <a href="https://arxiv.org/format/2405.05961">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Chemical Physics">physics.chem-ph</span> </div> </div> <p class="title is-5 mathjax"> Quantum mechanical dataset of 836k neutral closed shell molecules with upto 5 heavy atoms from CNOFSiPSClBr </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Khan%2C+D">Danish Khan</a>, <a href="/search/physics?searchtype=author&query=Benali%2C+A">Anouar Benali</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+Y+H">Scott Y. H. Kim</a>, <a href="/search/physics?searchtype=author&query=von+Rudorff%2C+G+F">Guido Falk von Rudorff</a>, <a href="/search/physics?searchtype=author&query=von+Lilienfeld%2C+O+A">O. Anatole von Lilienfeld</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.05961v4-abstract-short" style="display: inline;"> We introduce the Vector-QM24 (VQM24) dataset which comprehensively covers all possible neutral closed shell small organic and inorganic molecules and their conformers that contain up to five heavy atoms (non-hydrogen) consisting of $p$-block elements C, N, O, F, Si, P, S, Cl, Br. This dataset has been systematically generated by considering all combinatorially possible stoichiometries, and graphs… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.05961v4-abstract-full').style.display = 'inline'; document.getElementById('2405.05961v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.05961v4-abstract-full" style="display: none;"> We introduce the Vector-QM24 (VQM24) dataset which comprehensively covers all possible neutral closed shell small organic and inorganic molecules and their conformers that contain up to five heavy atoms (non-hydrogen) consisting of $p$-block elements C, N, O, F, Si, P, S, Cl, Br. This dataset has been systematically generated by considering all combinatorially possible stoichiometries, and graphs (according to Lewis rules), along with all stable conformers identified by GFN2-xTB. We have used density functional theory ($蠅$B97X-D3/cc-pVDZ) to optimize the geometries of 577k conformational isomers corresponding to 258k constitutional isomers consistent with 5,599 unique stoichiometries. Single point diffusion quantum Monte Carlo (DMC@PBE0(ccECP/cc-pVQZ)) energies are reported for the sub-set of all the energetically lowest conformers (10,793 molecules) with up to 4 heavy atoms. Apart from graphs, geometries, rotational constants, and vibrational normal modes, VQM24 includes internal, atomization, electron-electron repulsion, exchange-correlation, dispersion, vibrational frequency, Gibbs free, enthalpy, ZPV and molecular orbital energies; as well as entropy, and heat capacities. Electronic properties include multipole moments (dipole, quadrupole, octupole, hexadecapole), electrostatic potentials at nuclei (aka "alchemical potential"), Mulliken charges, and Kohn-Sham orbitals. Supervised machine learning (ML) models of atomization energies on the energetically lowest conformers for the 258k constitutional isomers indicate a significantly more challenging benchmark than the previously introduced QM9 dataset with none of our models reaching chemical accuracy. VQM24 represents an accurate and unbiased benchmark dataset ideal for assessing the efficiency, accuracy and transferability of quantum ML models of real systems. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.05961v4-abstract-full').style.display = 'none'; document.getElementById('2405.05961v4-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.18345">arXiv:2404.18345</a> <span> [<a href="https://arxiv.org/pdf/2404.18345">pdf</a>, <a href="https://arxiv.org/format/2404.18345">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3390/electronics13112127">10.3390/electronics13112127 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Parameter optimization of Josephson parametric amplifiers using a heuristic search algorithm for axion haloscope search </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Younggeun Kim</a>, <a href="/search/physics?searchtype=author&query=Jeong%2C+J">Junu Jeong</a>, <a href="/search/physics?searchtype=author&query=Youn%2C+S">SungWoo Youn</a>, <a href="/search/physics?searchtype=author&query=Bae%2C+S">Sungjae Bae</a>, <a href="/search/physics?searchtype=author&query=van+Loo%2C+A+F">Arjan F. van Loo</a>, <a href="/search/physics?searchtype=author&query=Nakamura%2C+Y">Yasunobu Nakamura</a>, <a href="/search/physics?searchtype=author&query=Uchaikin%2C+S">Sergey Uchaikin</a>, <a href="/search/physics?searchtype=author&query=Semertzidis%2C+Y+K">Yannis K. Semertzidis</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.18345v1-abstract-short" style="display: inline;"> The cavity haloscope is among the most widely adopted experimental platforms designed to detect dark matter axions with its principle relying on the conversion of axions into microwave photons in the presence of a strong magnetic field. The Josephson parametric amplifier (JPA), known for its quantum-limited noise characteristics, has been incorporated in the detection system to capture the weakly… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.18345v1-abstract-full').style.display = 'inline'; document.getElementById('2404.18345v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.18345v1-abstract-full" style="display: none;"> The cavity haloscope is among the most widely adopted experimental platforms designed to detect dark matter axions with its principle relying on the conversion of axions into microwave photons in the presence of a strong magnetic field. The Josephson parametric amplifier (JPA), known for its quantum-limited noise characteristics, has been incorporated in the detection system to capture the weakly interacting axion signals. However, the performance of the JPA can be influenced by its environment, leading to potential unreliability of a predefined parameter set obtained in a specific laboratory setting. Furthermore, conducting a broadband search requires consecutive characterization of the amplifier across different tuning frequencies. To ensure more reliable measurements, we utilize the Nelder-Mead technique as a numerical search method to dynamically determine the optimal operating conditions. This heuristic search algorithm explores the multidimensional parameter space of the JPA, optimizing critical characteristics such as gain and noise temperature to maximize signal-to-noise ratios for a given experimental setup. Our study presents a comprehensive analysis of the properties of a flux-driven JPA to demonstrate the effectiveness of the algorithm. This approach contributes to ongoing efforts in axion dark matter research by offering an efficient method to enhance axion detection sensitivity through the optimized utilization of JPAs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.18345v1-abstract-full').style.display = 'none'; document.getElementById('2404.18345v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 9 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.17130">arXiv:2404.17130</a> <span> [<a href="https://arxiv.org/pdf/2404.17130">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Chemical Physics">physics.chem-ph</span> </div> </div> <p class="title is-5 mathjax"> Ultralow-Power Single-Sensor-Based E-Nose System Powered by Duty Cycling and Deep Learning for Real-Time Gas Identification </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kim%2C+T">Taejung Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Yonggi Kim</a>, <a href="/search/physics?searchtype=author&query=Cho%2C+W">Wootaek Cho</a>, <a href="/search/physics?searchtype=author&query=Kwak%2C+J">Jong-Hyun Kwak</a>, <a href="/search/physics?searchtype=author&query=Cho%2C+J">Jeonghoon Cho</a>, <a href="/search/physics?searchtype=author&query=Pyeon%2C+Y">Youjang Pyeon</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+J">Jae Joon Kim</a>, <a href="/search/physics?searchtype=author&query=Shin%2C+H">Heungjoo Shin</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.17130v1-abstract-short" style="display: inline;"> This study presents a novel, ultralow-power single-sensor-based electronic nose (e-nose) system for real-time gas identification, distinguishing itself from conventional sensor-array-based e-nose systems whose power consumption and cost increase with the number of sensors. Our system employs a single metal oxide semiconductor (MOS) sensor built on a suspended 1D nanoheater, driven by duty cycling-… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.17130v1-abstract-full').style.display = 'inline'; document.getElementById('2404.17130v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.17130v1-abstract-full" style="display: none;"> This study presents a novel, ultralow-power single-sensor-based electronic nose (e-nose) system for real-time gas identification, distinguishing itself from conventional sensor-array-based e-nose systems whose power consumption and cost increase with the number of sensors. Our system employs a single metal oxide semiconductor (MOS) sensor built on a suspended 1D nanoheater, driven by duty cycling-characterized by repeated pulsed power inputs. The sensor's ultrafast thermal response, enabled by its small size, effectively decouples the effects of temperature and surface charge exchange on the MOS nanomaterial's conductivity. This provides distinct sensing signals that alternate between responses coupled with and decoupled from the thermally enhanced conductivity, all within a single time domain during duty cycling. The magnitude and ratio of these dual responses vary depending on the gas type and concentration, facilitating the early-stage gas identification of five gas types within 30 s via a convolutional neural network (classification accuracy = 93.9%, concentration regression error = 19.8%). Additionally, the duty-cycling mode significantly reduces power consumption by up to 90%, lowering it to 160 $渭$W to heat the sensor to 250$^\circ$C. Manufactured using only wafer-level batch microfabrication processes, this innovative e-nose system promises the facile implementation of battery-driven, long-term, and cost-effective IoT monitoring systems. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.17130v1-abstract-full').style.display = 'none'; document.getElementById('2404.17130v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">67 pages, 10 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.10853">arXiv:2404.10853</a> <span> [<a href="https://arxiv.org/pdf/2404.10853">pdf</a>, <a href="https://arxiv.org/format/2404.10853">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> </div> <p class="title is-5 mathjax"> Efficient 6-dimensional phase space reconstruction from experimental measurements using generative machine learning </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Roussel%2C+R">Ryan Roussel</a>, <a href="/search/physics?searchtype=author&query=Gonzalez-Aguilera%2C+J+P">Juan Pablo Gonzalez-Aguilera</a>, <a href="/search/physics?searchtype=author&query=Edelen%2C+A">Auralee Edelen</a>, <a href="/search/physics?searchtype=author&query=Wisniewski%2C+E">Eric Wisniewski</a>, <a href="/search/physics?searchtype=author&query=Ody%2C+A">Alex Ody</a>, <a href="/search/physics?searchtype=author&query=Liu%2C+W">Wanming Liu</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Young-Kee Kim</a>, <a href="/search/physics?searchtype=author&query=Power%2C+J">John Power</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.10853v2-abstract-short" style="display: inline;"> Next-generation accelerator concepts which hinge on the precise shaping of beam distributions, demand equally precise diagnostic methods capable of reconstructing beam distributions within 6-dimensional position-momentum spaces. However, the characterization of intricate features within 6-dimensional beam distributions using conventional diagnostic techniques necessitates hundreds of measurements,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.10853v2-abstract-full').style.display = 'inline'; document.getElementById('2404.10853v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.10853v2-abstract-full" style="display: none;"> Next-generation accelerator concepts which hinge on the precise shaping of beam distributions, demand equally precise diagnostic methods capable of reconstructing beam distributions within 6-dimensional position-momentum spaces. However, the characterization of intricate features within 6-dimensional beam distributions using conventional diagnostic techniques necessitates hundreds of measurements, using many hours of valuable beam time. Novel phase space reconstruction techniques are needed to substantially reduce the number of measurements required to reconstruct detailed, high-dimensional beam features in order to resolve complex beam phenomena, and as feedback in precision beam shaping applications. In this study, we present a novel approach to reconstructing detailed 6-dimensional phase space distributions from experimental measurements using generative machine learning and differentiable beam dynamics simulations. We demonstrate that for a collection of synthetic beam distribution test cases that this approach can be used to resolve 6-dimensional phase space distributions using basic beam manipulations and as few as 20 2-dimensional measurements of the beam profile, without the need for prior data collection or model training. We also demonstrate an application of the reconstruction method in an experimental setting at the Argonne Wakefield Accelerator, where it is able to reconstruct the beam distribution and accurately predict previously unseen measurements 75x faster than previous methods. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.10853v2-abstract-full').style.display = 'none'; document.getElementById('2404.10853v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.04153">arXiv:2404.04153</a> <span> [<a href="https://arxiv.org/pdf/2404.04153">pdf</a>, <a href="https://arxiv.org/format/2404.04153">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Evaluation of the performance of the event reconstruction algorithms in the JSNS$^2$ experiment using a $^{252}$Cf calibration source </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lee%2C+D+H">D. H. Lee</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M+K">M. K. Cheoun</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+H">J. H. Choi</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+Y">J. Y. Choi</a>, <a href="/search/physics?searchtype=author&query=Dodo%2C+T">T. Dodo</a>, <a href="/search/physics?searchtype=author&query=Goh%2C+J">J. Goh</a>, <a href="/search/physics?searchtype=author&query=Haga%2C+K">K. Haga</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Hwang%2C+W">W. Hwang</a>, <a href="/search/physics?searchtype=author&query=Iida%2C+T">T. Iida</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+H+I">H. I. Jang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+J+S">J. S. Jang</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+K+K">K. K. Joo</a>, <a href="/search/physics?searchtype=author&query=Jung%2C+D+E">D. E. Jung</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+S+K">S. K. Kang</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+T">T. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+E+J">E. J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+Y">J. Y. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+B">S. B Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+W">W. Kim</a>, <a href="/search/physics?searchtype=author&query=Kinoshita%2C+H">H. Kinoshita</a>, <a href="/search/physics?searchtype=author&query=Konno%2C+T">T. Konno</a>, <a href="/search/physics?searchtype=author&query=Lim%2C+I+T">I. T. Lim</a> , et al. (28 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.04153v1-abstract-short" style="display: inline;"> JSNS$^2$ searches for short baseline neutrino oscillations with a baseline of 24~meters and a target of 17~tonnes of the Gd-loaded liquid scintillator. The correct algorithm on the event reconstruction of events, which determines the position and energy of neutrino interactions in the detector, are essential for the physics analysis of the data from the experiment. Therefore, the performance of th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.04153v1-abstract-full').style.display = 'inline'; document.getElementById('2404.04153v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.04153v1-abstract-full" style="display: none;"> JSNS$^2$ searches for short baseline neutrino oscillations with a baseline of 24~meters and a target of 17~tonnes of the Gd-loaded liquid scintillator. The correct algorithm on the event reconstruction of events, which determines the position and energy of neutrino interactions in the detector, are essential for the physics analysis of the data from the experiment. Therefore, the performance of the event reconstruction is carefully checked with calibrations using $^{252}$Cf source. This manuscript describes the methodology and the performance of the event reconstruction. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.04153v1-abstract-full').style.display = 'none'; document.getElementById('2404.04153v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.03691">arXiv:2404.03691</a> <span> [<a href="https://arxiv.org/pdf/2404.03691">pdf</a>, <a href="https://arxiv.org/format/2404.03691">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Upgrade of NaI(Tl) crystal encapsulation for the NEON experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Choi%2C+J+J">J. J. Choi</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+E+J">E. J. Jeon</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+Y">J. Y. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+K+W">K. W. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+H">S. H. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+K">S. K. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y+D">Y. D. Kim</a>, <a href="/search/physics?searchtype=author&query=Ko%2C+Y+J">Y. J. Ko</a>, <a href="/search/physics?searchtype=author&query=Koh%2C+B+C">B. C. Koh</a>, <a href="/search/physics?searchtype=author&query=Ha%2C+C">C. Ha</a>, <a href="/search/physics?searchtype=author&query=Park%2C+B+J">B. J. Park</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+S+H">S. H. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+I+S">I. S. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+H">H. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+H+S">H. S. Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+J">J. Lee</a>, <a href="/search/physics?searchtype=author&query=Oh%2C+Y+M">Y. M. Oh</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.03691v2-abstract-short" style="display: inline;"> The Neutrino Elastic-scattering Observation with NaI(Tl) experiment (NEON) aims to detect coherent elastic neutrino-nucleus scattering~(\cenns) in a NaI(Tl) crystal using reactor anti-electron neutrinos at the Hanbit nuclear power plant complex. A total of 13.3 kg of NaI(Tl) crystals were initially installed in December 2020 at the tendon gallery, 23.7$\pm$0.3\,m away from the reactor core, which… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.03691v2-abstract-full').style.display = 'inline'; document.getElementById('2404.03691v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.03691v2-abstract-full" style="display: none;"> The Neutrino Elastic-scattering Observation with NaI(Tl) experiment (NEON) aims to detect coherent elastic neutrino-nucleus scattering~(\cenns) in a NaI(Tl) crystal using reactor anti-electron neutrinos at the Hanbit nuclear power plant complex. A total of 13.3 kg of NaI(Tl) crystals were initially installed in December 2020 at the tendon gallery, 23.7$\pm$0.3\,m away from the reactor core, which operates at a thermal power of 2.8\,GW. Initial engineering operation was performed from May 2021 to March 2022 and observed unexpected photomultiplier-induced noise and a decreased light yield that were caused by leakage of liquid scintillator into the detector due to weakness of detector encapsulation. We upgraded the detector encapsulation design to prevent the leakage of the liquid scintillator. Meanwhile two small-sized detectors were replaced with larger ones resulting in a total mass of 16.7\,kg. With this new design implementation, the detector system has been operating stably since April 2022 for over a year without detector gain drop. In this paper, we present an improved crystal encapsulation design and stability of the NEON experiment. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.03691v2-abstract-full').style.display = 'none'; document.getElementById('2404.03691v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.03679">arXiv:2404.03679</a> <span> [<a href="https://arxiv.org/pdf/2404.03679">pdf</a>, <a href="https://arxiv.org/format/2404.03679">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Pulse Shape Discrimination in JSNS$^2$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Dodo%2C+T">T. Dodo</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M+K">M. K. Cheoun</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+H">J. H. Choi</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+Y">J. Y. Choi</a>, <a href="/search/physics?searchtype=author&query=Goh%2C+J">J. Goh</a>, <a href="/search/physics?searchtype=author&query=Haga%2C+K">K. Haga</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Hwang%2C+W">W. Hwang</a>, <a href="/search/physics?searchtype=author&query=Iida%2C+T">T. Iida</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+H+I">H. I. Jang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+J+S">J. S. Jang</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+K+K">K. K. Joo</a>, <a href="/search/physics?searchtype=author&query=Jung%2C+D+E">D. E. Jung</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+S+K">S. K. Kang</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+T">T. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+E+J">E. J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+Y">J. Y. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+B">S. B. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+W">W. Kim</a>, <a href="/search/physics?searchtype=author&query=Kinoshita%2C+H">H. Kinoshita</a>, <a href="/search/physics?searchtype=author&query=Konno%2C+T">T. Konno</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+D+H">D. H. Lee</a>, <a href="/search/physics?searchtype=author&query=Lim%2C+I+T">I. T. Lim</a> , et al. (29 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.03679v1-abstract-short" style="display: inline;"> JSNS$^2$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment that is searching for sterile neutrinos via the observation of $\bar谓_渭 \rightarrow \bar谓_e$ appearance oscillations using neutrinos with muon decay-at-rest. For this search, rejecting cosmic-ray-induced neutron events by Pulse Shape Discrimination (PSD) is essential because the JSNS$^2$ detector is loca… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.03679v1-abstract-full').style.display = 'inline'; document.getElementById('2404.03679v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.03679v1-abstract-full" style="display: none;"> JSNS$^2$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment that is searching for sterile neutrinos via the observation of $\bar谓_渭 \rightarrow \bar谓_e$ appearance oscillations using neutrinos with muon decay-at-rest. For this search, rejecting cosmic-ray-induced neutron events by Pulse Shape Discrimination (PSD) is essential because the JSNS$^2$ detector is located above ground, on the third floor of the building. We have achieved 95$\%$ rejection of neutron events while keeping 90$\%$ of signal, electron-like events using a data driven likelihood method. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.03679v1-abstract-full').style.display = 'none'; document.getElementById('2404.03679v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">arXiv admin note: text overlap with arXiv:2111.07482, arXiv:2308.02722</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.01531">arXiv:2404.01531</a> <span> [<a href="https://arxiv.org/pdf/2404.01531">pdf</a>, <a href="https://arxiv.org/format/2404.01531">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Plasma Physics">physics.plasm-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.123019">10.1103/PhysRevD.109.123019 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> General relativistic force-free electrodynamics with a discontinuous Galerkin-finite difference hybrid method </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Yoonsoo Kim</a>, <a href="/search/physics?searchtype=author&query=Most%2C+E+R">Elias R. Most</a>, <a href="/search/physics?searchtype=author&query=Throwe%2C+W">William Throwe</a>, <a href="/search/physics?searchtype=author&query=Teukolsky%2C+S+A">Saul A. Teukolsky</a>, <a href="/search/physics?searchtype=author&query=Deppe%2C+N">Nils Deppe</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.01531v2-abstract-short" style="display: inline;"> Relativistic plasmas around compact objects can sometimes be approximated as being force-free. In this limit, the plasma inertia is negligible and the overall dynamics is governed by global electric currents. We present a novel numerical approach for simulating such force-free plasmas, which allows for high accuracy in smooth regions as well as capturing dissipation in current sheets. Using a high… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.01531v2-abstract-full').style.display = 'inline'; document.getElementById('2404.01531v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.01531v2-abstract-full" style="display: none;"> Relativistic plasmas around compact objects can sometimes be approximated as being force-free. In this limit, the plasma inertia is negligible and the overall dynamics is governed by global electric currents. We present a novel numerical approach for simulating such force-free plasmas, which allows for high accuracy in smooth regions as well as capturing dissipation in current sheets. Using a high-order accurate discontinuous Galerkin method augmented with a conservative finite-difference method, we demonstrate efficient global simulations of black hole and neutron star magnetospheres. In addition to a series of challenging test problems, we show that our approach can-depending on the physical properties of the system and the numerical implementation-be up to 10x more efficient than conventional simulations, with a speedup of 2-3x for most problems we consider in practice. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.01531v2-abstract-full').style.display = 'none'; document.getElementById('2404.01531v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">22 pages, 13 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 109, 123019 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.19214">arXiv:2403.19214</a> <span> [<a href="https://arxiv.org/pdf/2403.19214">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Computational Physics">physics.comp-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1038/s41524-024-01433-0">10.1038/s41524-024-01433-0 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Convolutional network learning of self-consistent electron density via grid-projected atomic fingerprints </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lee%2C+R">Ryong-Gyu Lee</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Yong-Hoon Kim</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2403.19214v1-abstract-short" style="display: inline;"> The self-consistent field (SCF) generation of the three-dimensional (3D) electron density distribution ($蟻$) represents a fundamental aspect of density functional theory (DFT) and related first-principles calculations, and how one can shorten or bypass the SCF loop represents a critical question from both practical and fundamental standpoints. Herein, a machine learning strategy DeepSCF is present… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.19214v1-abstract-full').style.display = 'inline'; document.getElementById('2403.19214v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.19214v1-abstract-full" style="display: none;"> The self-consistent field (SCF) generation of the three-dimensional (3D) electron density distribution ($蟻$) represents a fundamental aspect of density functional theory (DFT) and related first-principles calculations, and how one can shorten or bypass the SCF loop represents a critical question from both practical and fundamental standpoints. Herein, a machine learning strategy DeepSCF is presented in which the map between the SCF $蟻$ and the initial guess density ($蟻_0$) constructed by the summation of neutral atomic densities is learned using 3D convolutional neural networks (CNNs). High accuracy and transferability of DeepSCF are achieved by expanding the input features to include atomic fingerprints beyond $蟻_0$ and encoding them on a 3D grid. The prediction of the residual density ($未蟻$) rather than $蟻$ itself is targeted, and, since $未蟻$ corresponds to chemical bonding information, a dataset of small-sized organic molecules featuring diverse bonding characters is adopted. After enhancing the fidelity of the method by subjecting the atomic geometries in the dataset to random strains and rotations, the effectiveness of DeepSCF is finally demonstrated using a complex large carbon nanotube-based DNA sequencer model. This work evidences that the nearsightedness in electronic structures can be optimally represented via the local connectivity in CNNs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.19214v1-abstract-full').style.display = 'none'; document.getElementById('2403.19214v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 6 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> npj Computational Materials 10, Article number: 248 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.18044">arXiv:2403.18044</a> <span> [<a href="https://arxiv.org/pdf/2403.18044">pdf</a>, <a href="https://arxiv.org/format/2403.18044">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optimization and Control">math.OC</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Machine Learning">cs.LG</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Dynamical Systems">math.DS</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Numerical Analysis">math.NA</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Fluid Dynamics">physics.flu-dyn</span> </div> </div> <p class="title is-5 mathjax"> Deep polytopic autoencoders for low-dimensional linear parameter-varying approximations and nonlinear feedback design </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Heiland%2C+J">Jan Heiland</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Yongho Kim</a>, <a href="/search/physics?searchtype=author&query=Werner%2C+S+W+R">Steffen W. R. Werner</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2403.18044v1-abstract-short" style="display: inline;"> Polytopic autoencoders provide low-dimensional parametrizations of states in a polytope. For nonlinear PDEs, this is readily applied to low-dimensional linear parameter-varying (LPV) approximations as they have been exploited for efficient nonlinear controller design via series expansions of the solution to the state-dependent Riccati equation. In this work, we develop a polytopic autoencoder for… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.18044v1-abstract-full').style.display = 'inline'; document.getElementById('2403.18044v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.18044v1-abstract-full" style="display: none;"> Polytopic autoencoders provide low-dimensional parametrizations of states in a polytope. For nonlinear PDEs, this is readily applied to low-dimensional linear parameter-varying (LPV) approximations as they have been exploited for efficient nonlinear controller design via series expansions of the solution to the state-dependent Riccati equation. In this work, we develop a polytopic autoencoder for control applications and show how it outperforms standard linear approaches in view of LPV approximations of nonlinear systems and how the particular architecture enables higher order series expansions at little extra computational effort. We illustrate the properties and potentials of this approach to computational nonlinear controller design for large-scale systems with a thorough numerical study. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.18044v1-abstract-full').style.display = 'none'; document.getElementById('2403.18044v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 6 figures, 2 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.07405">arXiv:2403.07405</a> <span> [<a href="https://arxiv.org/pdf/2403.07405">pdf</a>, <a href="https://arxiv.org/format/2403.07405">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Radon Concentration Measurement with a High-Sensitivity Radon Detector at the Yemilab </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Seo%2C+K">Kyungmin Seo</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+H">Hyunsoo Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+Y">Yeongduk Kim</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+H">Hyeyoung Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+J">Jaison Lee</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+M+H">Moo Hyun Lee</a>, <a href="/search/physics?searchtype=author&query=So%2C+J">Jungho So</a>, <a href="/search/physics?searchtype=author&query=Yoon%2C+S">Sangcheol Yoon</a>, <a href="/search/physics?searchtype=author&query=Yoon%2C+Y">Youngsoo Yoon</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2403.07405v2-abstract-short" style="display: inline;"> The radiation emitted from radon is a critical background in rare event search experiments conducted at the Yemi Underground Laboratory (Yemilab) in Jeongseon, Korea. A Radon Reduction System(RRS) has been developed and installed in Yemilab to reduce radon concentration in the air. The RRS primarily provides a purified air of 50 m3/h to the cleanroom used to assemble crystal detectors in the AMoRE… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.07405v2-abstract-full').style.display = 'inline'; document.getElementById('2403.07405v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.07405v2-abstract-full" style="display: none;"> The radiation emitted from radon is a critical background in rare event search experiments conducted at the Yemi Underground Laboratory (Yemilab) in Jeongseon, Korea. A Radon Reduction System(RRS) has been developed and installed in Yemilab to reduce radon concentration in the air. The RRS primarily provides a purified air of 50 m3/h to the cleanroom used to assemble crystal detectors in the AMoRE, a neutrinoless double beta decay search experiment. RRS can reduce the radon level by a factor of 300, so a high-sensitivity radon detector was required. A highly sensitive radon detector was constructed using a 70 L chamber with a large PIN photodiode to measure radon concentration in the purified air. The radon detector shows an excellent resolution of 72 keV (FWHM) for 6.003 MeV alphas from 218Po decay and a sensitivity down to 23.8 +- 2.1 mBq/m3 with a boil-off N2 gas sample. The radon concentration level from the RRS measured by the radon detector was below 0.29 Bq/m3 with a reduction factor of about 300. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.07405v2-abstract-full').style.display = 'none'; document.getElementById('2403.07405v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">16 pages, 12 figures, 2 tables, to be published in JINST</span> </p> </li> </ol> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Kim%2C+Y&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Kim%2C+Y&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Kim%2C+Y&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> <li> <a href="/search/?searchtype=author&query=Kim%2C+Y&start=100" class="pagination-link " aria-label="Page 3" aria-current="page">3 </a> </li> <li> <a href="/search/?searchtype=author&query=Kim%2C+Y&start=150" class="pagination-link " aria-label="Page 4" aria-current="page">4 </a> </li> <li> <a href="/search/?searchtype=author&query=Kim%2C+Y&start=200" class="pagination-link " aria-label="Page 5" aria-current="page">5 </a> </li> <li><span class="pagination-ellipsis">…</span></li> </ul> </nav> 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