Search | arXiv e-print repository

<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"/> <meta name="viewport" content="width=device-width, initial-scale=1"/>  <link rel="apple-touch-icon" sizes="180x180" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/apple-touch-icon.png"> <link rel="icon" type="image/png" sizes="32x32" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/favicon-32x32.png"> <link rel="icon" type="image/png" sizes="16x16" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/favicon-16x16.png"> <link rel="manifest" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/site.webmanifest"> <link rel="mask-icon" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/safari-pinned-tab.svg" color="#b31b1b"> <link rel="shortcut icon" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/favicon.ico"> <meta name="msapplication-TileColor" content="#b31b1b"> <meta name="msapplication-config" content="images/icons/browserconfig.xml"> <meta name="theme-color" content="#b31b1b">  <title>Search | arXiv e-print repository</title> <script defer src="https://static.arxiv.org/static/base/1.0.0a5/fontawesome-free-5.11.2-web/js/all.js"></script> <link rel="stylesheet" href="https://static.arxiv.org/static/base/1.0.0a5/css/arxivstyle.css" /> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ messageStyle: "none", extensions: ["tex2jax.js"], jax: ["input/TeX", "output/HTML-CSS"], tex2jax: { inlineMath: [ ['$','$'], ["\$","\$"] ], displayMath: [ ['$$','$$'], ["\\[","\\]"] ], processEscapes: true, ignoreClass: '.*', processClass: 'mathjax.*' }, TeX: { extensions: ["AMSmath.js", "AMSsymbols.js", "noErrors.js"], noErrors: { inlineDelimiters: ["$","$"], multiLine: false, style: { "font-size": "normal", "border": "" } } }, "HTML-CSS": { availableFonts: ["TeX"] } }); </script> <script src='//static.arxiv.org/MathJax-2.7.3/MathJax.js'></script> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/notification.js"></script> <link rel="stylesheet" href="https://static.arxiv.org/static/search/0.5.6/css/bulma-tooltip.min.css" /> <link rel="stylesheet" href="https://static.arxiv.org/static/search/0.5.6/css/search.css" /> <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha256-k2WSCIexGzOj3Euiig+TlR8gA0EmPjuc79OEeY5L45g=" crossorigin="anonymous"></script> <script src="https://static.arxiv.org/static/search/0.5.6/js/fieldset.js"></script> <style> radio#cf-customfield_11400 { display: none; } </style> </head> <body> <header><a href="#main-container" class="is-sr-only">Skip to main content</a>  <div class="attribution level is-marginless" role="banner"> <div class="level-left"> <a class="level-item" href="https://cornell.edu/"><img src="https://static.arxiv.org/static/base/1.0.0a5/images/cornell-reduced-white-SMALL.svg" alt="Cornell University" width="200" aria-label="logo" /></a> </div> <div class="level-right is-marginless"><p class="sponsors level-item is-marginless"><span id="support-ack-url">We gratefully acknowledge support from<br /> the Simons Foundation, <a href="https://info.arxiv.org/about/ourmembers.html">member institutions</a>, and all contributors. <a href="https://info.arxiv.org/about/donate.html">Donate</a></span></p></div> </div>  <div class="identity level is-marginless"> <div class="level-left"> <div class="level-item"> <a class="arxiv" href="https://arxiv.org/" aria-label="arxiv-logo"> <img src="https://static.arxiv.org/static/base/1.0.0a5/images/arxiv-logo-one-color-white.svg" aria-label="logo" alt="arxiv logo" width="85" style="width:85px;"/> </a> </div> </div> <div class="search-block level-right"> <form class="level-item mini-search" method="GET" action="https://arxiv.org/search"> <div class="field has-addons"> <div class="control"> <input class="input is-small" type="text" name="query" placeholder="Search..." aria-label="Search term or terms" /> <p class="help"><a href="https://info.arxiv.org/help">Help</a> | <a href="https://arxiv.org/search/advanced">Advanced Search</a></p> </div> <div class="control"> <div class="select is-small"> <select name="searchtype" aria-label="Field to search"> <option value="all" selected="selected">All fields</option> <option value="title">Title</option> <option value="author">Author</option> <option value="abstract">Abstract</option> <option value="comments">Comments</option> <option value="journal_ref">Journal reference</option> <option value="acm_class">ACM classification</option> <option value="msc_class">MSC classification</option> <option value="report_num">Report number</option> <option value="paper_id">arXiv identifier</option> <option value="doi">DOI</option> <option value="orcid">ORCID</option> <option value="author_id">arXiv author ID</option> <option value="help">Help pages</option> <option value="full_text">Full text</option> </select> </div> </div> <input type="hidden" name="source" value="header"> <button class="button is-small is-cul-darker">Search</button> </div> </form> </div> </div>  <div class="container"> <div class="user-tools is-size-7 has-text-right has-text-weight-bold" role="navigation" aria-label="User menu"> <a href="https://arxiv.org/login">Login</a> </div> </div> </header> <main class="container" id="main-container"> <div class="level is-marginless"> <div class="level-left"> <h1 class="title is-clearfix"> Showing 1–19 of 19 results for author: <span class="mathjax">Door, M</span> </h1> </div> <div class="level-right is-hidden-mobile">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> <div class="content"> <form method="GET" action="/search/" aria-role="search"> <div class="field has-addons-tablet"> <div class="control is-expanded"> <label for="query" class="hidden-label">Search term or terms</label> <input class="input is-medium" id="query" name="query" placeholder="Search term..." type="text" value="Door, M"> </div> <div class="select control is-medium"> <label class="is-hidden" for="searchtype">Field</label> <select class="is-medium" id="searchtype" name="searchtype"><option value="all">All fields</option><option value="title">Title</option><option selected value="author">Author(s)</option><option value="abstract">Abstract</option><option value="comments">Comments</option><option value="journal_ref">Journal reference</option><option value="acm_class">ACM classification</option><option value="msc_class">MSC classification</option><option value="report_num">Report number</option><option value="paper_id">arXiv identifier</option><option value="doi">DOI</option><option value="orcid">ORCID</option><option value="license">License (URI)</option><option value="author_id">arXiv author ID</option><option value="help">Help pages</option><option value="full_text">Full text</option></select> </div> <div class="control"> <button class="button is-link is-medium">Search</button> </div> </div> <div class="field"> <div class="control is-size-7"> <label class="radio"> <input checked id="abstracts-0" name="abstracts" type="radio" value="show"> Show abstracts </label> <label class="radio"> <input id="abstracts-1" name="abstracts" type="radio" value="hide"> Hide abstracts </label> </div> </div> <div class="is-clearfix" style="height: 2.5em"> <div class="is-pulled-right"> <a href="/search/advanced?terms-0-term=Door%2C+M&terms-0-field=author&size=50&order=-announced_date_first">Advanced Search</a> </div> </div> <input type="hidden" name="order" value="-announced_date_first"> <input type="hidden" name="size" value="50"> </form> <div class="level breathe-horizontal"> <div class="level-left"> <form method="GET" action="/search/"> <div style="display: none;"> <select id="searchtype" name="searchtype"><option value="all">All fields</option><option value="title">Title</option><option selected value="author">Author(s)</option><option value="abstract">Abstract</option><option value="comments">Comments</option><option value="journal_ref">Journal reference</option><option value="acm_class">ACM classification</option><option value="msc_class">MSC classification</option><option value="report_num">Report number</option><option value="paper_id">arXiv identifier</option><option value="doi">DOI</option><option value="orcid">ORCID</option><option value="license">License (URI)</option><option value="author_id">arXiv author ID</option><option value="help">Help pages</option><option value="full_text">Full text</option></select> <input id="query" name="query" type="text" value="Door, M"> <ul id="abstracts"><li><input checked id="abstracts-0" name="abstracts" type="radio" value="show"> <label for="abstracts-0">Show abstracts</label></li><li><input id="abstracts-1" name="abstracts" type="radio" value="hide"> <label for="abstracts-1">Hide abstracts</label></li></ul> </div> <div class="box field is-grouped is-grouped-multiline level-item"> <div class="control"> <span class="select is-small"> <select id="size" name="size"><option value="25">25</option><option selected value="50">50</option><option value="100">100</option><option value="200">200</option></select> </span> <label for="size">results per page</label>. </div> <div class="control"> <label for="order">Sort results by</label> <span class="select is-small"> <select id="order" name="order"><option selected value="-announced_date_first">Announcement date (newest first)</option><option value="announced_date_first">Announcement date (oldest first)</option><option value="-submitted_date">Submission date (newest first)</option><option value="submitted_date">Submission date (oldest first)</option><option value="">Relevance</option></select> </span> </div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <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/2412.10277">arXiv:2412.10277</a> <span> [<a href="https://arxiv.org/pdf/2412.10277">pdf</a>, <a href="https://arxiv.org/format/2412.10277">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> </div> <p class="title is-5 mathjax"> Nonlinear calcium King plot constrains new bosons and nuclear properties </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Wilzewski%2C+A">A. Wilzewski</a>, <a href="/search/?searchtype=author&query=Huber%2C+L+I">L. I. Huber</a>, <a href="/search/?searchtype=author&query=Door%2C+M">M. Door</a>, <a href="/search/?searchtype=author&query=Richter%2C+J">J. Richter</a>, <a href="/search/?searchtype=author&query=Mariotti%2C+A">A. Mariotti</a>, <a href="/search/?searchtype=author&query=Spie%C3%9F%2C+L+J">L. J. Spie脽</a>, <a href="/search/?searchtype=author&query=Wehrheim%2C+M">M. Wehrheim</a>, <a href="/search/?searchtype=author&query=Chen%2C+S">S. Chen</a>, <a href="/search/?searchtype=author&query=King%2C+S+A">S. A. King</a>, <a href="/search/?searchtype=author&query=Micke%2C+P">P. Micke</a>, <a href="/search/?searchtype=author&query=Filzinger%2C+M">M. Filzinger</a>, <a href="/search/?searchtype=author&query=Steinel%2C+M+R">M. R. Steinel</a>, <a href="/search/?searchtype=author&query=Huntemann%2C+N">N. Huntemann</a>, <a href="/search/?searchtype=author&query=Benkler%2C+E">E. Benkler</a>, <a href="/search/?searchtype=author&query=Schmidt%2C+P+O">P. O. Schmidt</a>, <a href="/search/?searchtype=author&query=Flannery%2C+J">J. Flannery</a>, <a href="/search/?searchtype=author&query=Matt%2C+R">R. Matt</a>, <a href="/search/?searchtype=author&query=Stadler%2C+M">M. Stadler</a>, <a href="/search/?searchtype=author&query=Oswald%2C+R">R. Oswald</a>, <a href="/search/?searchtype=author&query=Schmid%2C+F">F. Schmid</a>, <a href="/search/?searchtype=author&query=Kienzler%2C+D">D. Kienzler</a>, <a href="/search/?searchtype=author&query=Home%2C+J">J. Home</a>, <a href="/search/?searchtype=author&query=Craik%2C+D+P+L+A">D. P. L. Aude Craik</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">P. Filianin</a> , et al. (17 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="2412.10277v1-abstract-short" style="display: inline;"> Nonlinearities in King plots (KP) of isotope shifts (IS) can reveal the existence of beyond-Standard-Model (BSM) interactions that couple electrons and neutrons. However, it is crucial to distinguish higher-order Standard Model (SM) effects from BSM physics. We measure the IS of the transitions ${{}^{3}P_{0}~\rightarrow~{}^{3}P_{1}}$ in $\mathrm{Ca}^{14+}$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.10277v1-abstract-full').style.display = 'inline'; document.getElementById('2412.10277v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.10277v1-abstract-full" style="display: none;"> Nonlinearities in King plots (KP) of isotope shifts (IS) can reveal the existence of beyond-Standard-Model (BSM) interactions that couple electrons and neutrons. However, it is crucial to distinguish higher-order Standard Model (SM) effects from BSM physics. We measure the IS of the transitions ${{}^{3}P_{0}~\rightarrow~{}^{3}P_{1}}$ in $\mathrm{Ca}^{14+}$ and ${{}^{2}S_{1/2} \rightarrow {}^{2}D_{5/2}}$ in $\mathrm{Ca}^{+}$ with sub-Hz precision as well as the nuclear mass ratios with relative uncertainties below $4\times10^{-11}$ for the five stable, even isotopes of calcium (${}^{40,42,44,46,48}\mathrm{Ca}$). Combined, these measurements yield a calcium KP nonlinearity with a significance of $\sim 900 蟽$. Precision calculations show that the nonlinearity cannot be fully accounted for by the expected largest higher-order SM effect, the second-order mass shift, and identify the little-studied nuclear polarization as the only remaining SM contribution that may be large enough to explain it. Despite the observed nonlinearity, we improve existing KP-based constraints on a hypothetical Yukawa interaction for most of the new boson masses between $10~\mathrm{eV/c^2}$ and $10^7~\mathrm{eV/c^2}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.10277v1-abstract-full').style.display = 'none'; document.getElementById('2412.10277v1-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 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.15429">arXiv:2410.15429</a> <span> [<a href="https://arxiv.org/pdf/2410.15429">pdf</a>, <a href="https://arxiv.org/format/2410.15429">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Cryptography and Security">cs.CR</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"> Efficient Model Extraction via Boundary Sampling </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Dor%2C+M+B">Maor Biton Dor</a>, <a href="/search/?searchtype=author&query=Mirsky%2C+Y">Yisroel Mirsky</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="2410.15429v1-abstract-short" style="display: inline;"> This paper introduces a novel data-free model extraction attack that significantly advances the current state-of-the-art in terms of efficiency, accuracy, and effectiveness. Traditional black-box methods rely on using the victim's model as an oracle to label a vast number of samples within high-confidence areas. This approach not only requires an extensive number of queries but also results in a l… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.15429v1-abstract-full').style.display = 'inline'; document.getElementById('2410.15429v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.15429v1-abstract-full" style="display: none;"> This paper introduces a novel data-free model extraction attack that significantly advances the current state-of-the-art in terms of efficiency, accuracy, and effectiveness. Traditional black-box methods rely on using the victim's model as an oracle to label a vast number of samples within high-confidence areas. This approach not only requires an extensive number of queries but also results in a less accurate and less transferable model. In contrast, our method innovates by focusing on sampling low-confidence areas (along the decision boundaries) and employing an evolutionary algorithm to optimize the sampling process. These novel contributions allow for a dramatic reduction in the number of queries needed by the attacker by a factor of 10x to 600x while simultaneously improving the accuracy of the stolen model. Moreover, our approach improves boundary alignment, resulting in better transferability of adversarial examples from the stolen model to the victim's model (increasing the attack success rate from 60\% to 82\% on average). Finally, we accomplish all of this with a strict black-box assumption on the victim, with no knowledge of the target's architecture or dataset. We demonstrate our attack on three datasets with increasingly larger resolutions and compare our performance to four state-of-the-art model extraction attacks. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.15429v1-abstract-full').style.display = 'none'; document.getElementById('2410.15429v1-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> 20 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/2409.16465">arXiv:2409.16465</a> <span> [<a href="https://arxiv.org/pdf/2409.16465">pdf</a>, <a href="https://arxiv.org/format/2409.16465">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Robotics">cs.RO</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Computer Vision and Pattern Recognition">cs.CV</span> </div> </div> <p class="title is-5 mathjax"> Initialization of Monocular Visual Navigation for Autonomous Agents Using Modified Structure from Small Motion </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Florez%2C+J">Juan-Diego Florez</a>, <a href="/search/?searchtype=author&query=Dor%2C+M">Mehregan Dor</a>, <a href="/search/?searchtype=author&query=Tsiotras%2C+P">Panagiotis Tsiotras</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="2409.16465v2-abstract-short" style="display: inline;"> We propose a standalone monocular visual Simultaneous Localization and Mapping (vSLAM) initialization pipeline for autonomous space robots. Our method, a state-of-the-art factor graph optimization pipeline, extends Structure from Small Motion (SfSM) to robustly initialize a monocular agent in spacecraft inspection trajectories, addressing visual estimation challenges such as weak-perspective proje… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.16465v2-abstract-full').style.display = 'inline'; document.getElementById('2409.16465v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.16465v2-abstract-full" style="display: none;"> We propose a standalone monocular visual Simultaneous Localization and Mapping (vSLAM) initialization pipeline for autonomous space robots. Our method, a state-of-the-art factor graph optimization pipeline, extends Structure from Small Motion (SfSM) to robustly initialize a monocular agent in spacecraft inspection trajectories, addressing visual estimation challenges such as weak-perspective projection and center-pointing motion, which exacerbates the bas-relief ambiguity, dominant planar geometry, which causes motion estimation degeneracies in classical Structure from Motion, and dynamic illumination conditions, which reduce the survivability of visual information. We validate our approach on realistic, simulated satellite inspection image sequences with a tumbling spacecraft and demonstrate the method's effectiveness over existing monocular initialization procedures. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.16465v2-abstract-full').style.display = 'none'; document.getElementById('2409.16465v2-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">v1</span> submitted 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">6 pages, 1 page for references, 6 figures, 1 table, IEEEtran format. This work has been submitted to ACC for possible publication as an invited session paper</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.07792">arXiv:2403.07792</a> <span> [<a href="https://arxiv.org/pdf/2403.07792">pdf</a>, <a href="https://arxiv.org/format/2403.07792">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link 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="High Energy Physics - Phenomenology">hep-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="Nuclear Theory">nucl-th</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/PhysRevLett.134.063002">10.1103/PhysRevLett.134.063002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing new bosons and nuclear structure with ytterbium isotope shifts </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Yeh%2C+C">Chih-Han Yeh</a>, <a href="/search/?searchtype=author&query=Heinz%2C+M">Matthias Heinz</a>, <a href="/search/?searchtype=author&query=Kirk%2C+F">Fiona Kirk</a>, <a href="/search/?searchtype=author&query=Lyu%2C+C">Chunhai Lyu</a>, <a href="/search/?searchtype=author&query=Miyagi%2C+T">Takayuki Miyagi</a>, <a href="/search/?searchtype=author&query=Berengut%2C+J+C">Julian C. Berengut</a>, <a href="/search/?searchtype=author&query=Biero%C5%84%2C+J">Jacek Biero艅</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</a>, <a href="/search/?searchtype=author&query=Dreissen%2C+L+S">Laura S. Dreissen</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Filzinger%2C+M">Melina Filzinger</a>, <a href="/search/?searchtype=author&query=Fuchs%2C+E">Elina Fuchs</a>, <a href="/search/?searchtype=author&query=F%C3%BCrst%2C+H+A">Henning A. F眉rst</a>, <a href="/search/?searchtype=author&query=Gaigalas%2C+G">Gediminas Gaigalas</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Zolt谩n Harman</a>, <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">Jost Herkenhoff</a>, <a href="/search/?searchtype=author&query=Huntemann%2C+N">Nils Huntemann</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">Christoph H. Keitel</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">Daniel Lange</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">Alexander Rischka</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=Schwenk%2C+A">Achim Schwenk</a> , et al. (2 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="2403.07792v2-abstract-short" style="display: inline;"> In this Letter, we present mass-ratio measurements on highly charged Yb$^{42+}$ ions with a precision of $4\times 10^{-12}$ and isotope-shift measurements on Yb$^{+}$ on the $^{2}$S$_{1/2}$ $\to$ $^{2}$D$_{5/2}$ and $^{2}$S$_{1/2}$ $\to$ $^{2}$F$_{7/2}$ transitions with a precision of $4\times 10^{-9}$ for the isotopes $^{168,170,172,174,176}$Yb. We present a new method that allows us to extract h… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.07792v2-abstract-full').style.display = 'inline'; document.getElementById('2403.07792v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.07792v2-abstract-full" style="display: none;"> In this Letter, we present mass-ratio measurements on highly charged Yb$^{42+}$ ions with a precision of $4\times 10^{-12}$ and isotope-shift measurements on Yb$^{+}$ on the $^{2}$S$_{1/2}$ $\to$ $^{2}$D$_{5/2}$ and $^{2}$S$_{1/2}$ $\to$ $^{2}$F$_{7/2}$ transitions with a precision of $4\times 10^{-9}$ for the isotopes $^{168,170,172,174,176}$Yb. We present a new method that allows us to extract higher-order changes in the nuclear charge distribution along the Yb isotope chain, benchmarking ab-initio nuclear structure calculations. Additionally, we perform a King plot analysis to set bounds on a fifth force in the keV$/c^2$ to MeV$/c^2$ range coupling to electrons and neutrons. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.07792v2-abstract-full').style.display = 'none'; document.getElementById('2403.07792v2-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 January, 2025; <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">Journal ref:</span> Phys. Rev. Lett. 134 (2025) 063002 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2402.06464">arXiv:2402.06464</a> <span> [<a href="https://arxiv.org/pdf/2402.06464">pdf</a>, <a href="https://arxiv.org/ps/2402.06464">ps</a>, <a href="https://arxiv.org/format/2402.06464">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> </div> </div> <p class="title is-5 mathjax"> Penning-trap measurement of the $Q$-value of the electron capture in $^{163}\mathrm{Ho}$ for the determination of the electron neutrino mass </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=Bra%C3%9F%2C+M">Martin Bra脽</a>, <a href="/search/?searchtype=author&query=Debierre%2C+V">Vincent Debierre</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Dorrer%2C+H">Holger Dorrer</a>, <a href="/search/?searchtype=author&query=D%C3%BCllmann%2C+C+E">Christoph E. D眉llmann</a>, <a href="/search/?searchtype=author&query=Enss%2C+C">Christian Enss</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Gastaldo%2C+L">Loredana Gastaldo</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Zolt谩n Harman</a>, <a href="/search/?searchtype=author&query=Haverkort%2C+M+W">Maurits W. Haverkort</a>, <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">Jost Herkenhoff</a>, <a href="/search/?searchtype=author&query=Indelicato%2C+P">Paul Indelicato</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">Christoph H. Keitel</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">Daniel Lange</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yuri N. Novikov</a>, <a href="/search/?searchtype=author&query=Renisch%2C+D">Dennis Renisch</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">Alexander Rischka</a>, <a href="/search/?searchtype=author&query=Sch%C3%BCssler%2C+R+X">Rima X. Sch眉ssler</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</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="2402.06464v1-abstract-short" style="display: inline;"> The investigation of the absolute scale of the effective neutrino mass remains challenging due to the exclusively weak interaction of neutrinos with all known particles in the standard model of particle physics. Currently, the most precise and least model-dependent upper limit on the electron antineutrino mass is set by the KATRIN experiment from the analysis of the tritium \b{eta}-decay. Another… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.06464v1-abstract-full').style.display = 'inline'; document.getElementById('2402.06464v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2402.06464v1-abstract-full" style="display: none;"> The investigation of the absolute scale of the effective neutrino mass remains challenging due to the exclusively weak interaction of neutrinos with all known particles in the standard model of particle physics. Currently, the most precise and least model-dependent upper limit on the electron antineutrino mass is set by the KATRIN experiment from the analysis of the tritium \b{eta}-decay. Another promising approach is the electron capture in $^{163}\mathrm{Ho}$, which is under investigation using microcalorimetry within the ECHo and HOLMES collab orations. An independently measured Q-value of this process is vital for the assessment of systematic uncertainties in the neutrino mass determination. Here, we report a direct, independent determination of this $Q$-value by measuring the free-space cyclotron frequency ratio of highly charged ions of $^{163}\mathrm{Ho}$ and $^{163}\mathrm{Dy}$ in the Penning trap experiment \textsc{Pentatrap}. Combining this ratio with atomic physics calculations of the electronic binding energies yields a $Q$-value of $2863.2(0.6)\,\mathrm{eV}/c^{2}$ - a more than 50-fold improvement over the state-of-the-art. This will enable the determination of the electron neutrino mass on a sub-eV level from the analysis of the electron capture in $^{163}\mathrm{Ho}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.06464v1-abstract-full').style.display = 'none'; document.getElementById('2402.06464v1-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 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.17041">arXiv:2312.17041</a> <span> [<a href="https://arxiv.org/pdf/2312.17041">pdf</a>, <a href="https://arxiv.org/format/2312.17041">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link 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="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Atomic mass determination of uranium-238 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Lyu%2C+C">Chunhai Lyu</a>, <a href="/search/?searchtype=author&query=Biero%C5%84%2C+J">Jacek Biero艅</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Enzmann%2C+L">Lucia Enzmann</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Gaigalas%2C+G">Gediminas Gaigalas</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Zolt谩n Harman</a>, <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">Jost Herkenhoff</a>, <a href="/search/?searchtype=author&query=Huang%2C+W">Wenjia Huang</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">Christoph H. Keitel</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</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="2312.17041v1-abstract-short" style="display: inline;"> The atomic mass of uranium-238 has been determined to be $238.050\,787\,618(15)\,\text{u}$, improving the literature uncertainty by two orders of magnitude. It is obtained from a measurement of the mass ratio of $^{238}$U$^{47+}$ and $^{132}$Xe$^{26+}$ ions with an uncertainty of $3.5\times 10^{-12}$. The measurement was carried out with the Penning-trap mass spectrometer \textsc{Pentatrap} and wa… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.17041v1-abstract-full').style.display = 'inline'; document.getElementById('2312.17041v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.17041v1-abstract-full" style="display: none;"> The atomic mass of uranium-238 has been determined to be $238.050\,787\,618(15)\,\text{u}$, improving the literature uncertainty by two orders of magnitude. It is obtained from a measurement of the mass ratio of $^{238}$U$^{47+}$ and $^{132}$Xe$^{26+}$ ions with an uncertainty of $3.5\times 10^{-12}$. The measurement was carried out with the Penning-trap mass spectrometer \textsc{Pentatrap} and was accompanied by a calculation of the binding energies $E_{\text{U}}$ and $E_{\text{Xe}}$ of the 47 and 26 missing electrons of the two highly charged ions, respectively. These binding energies were determined using an \textit{ab initio} multiconfiguration Dirac-Hartree-Fock (MCDHF) method to be $E_{\text{U}} = 39\,927(10)\,\text{eV}$ and $E_{\text{Xe}} = 8\,971.2(21)\,\text{eV}$. The new mass value will serve as a reference for high-precision mass measurements in the heavy mass region of the nuclear chart up to transuranium nuclides. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.17041v1-abstract-full').style.display = 'none'; document.getElementById('2312.17041v1-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 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </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">Includes a Supplemental Material</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.08068">arXiv:2311.08068</a> <span> [<a href="https://arxiv.org/pdf/2311.08068">pdf</a>, <a href="https://arxiv.org/format/2311.08068">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="Atomic Physics">physics.atom-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/10.1063/5.0083515">10.1063/5.0083515 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Fast Silicon Carbide MOSFET based high-voltage push-pull switch for charge state separation of highly charged ions with a Bradbury-Nielsen Gate </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">Jost Herkenhoff</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">Daniel Lange</a>, <a href="/search/?searchtype=author&query=Marschall%2C+D">Domenik Marschall</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">Alexander Rischka</a>, <a href="/search/?searchtype=author&query=Wagner%2C+T">Thomas Wagner</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</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="2311.08068v1-abstract-short" style="display: inline;"> In this paper we report on the development of a fast high-voltage switch, which is based on two enhancement mode N-channel Silicon Carbide Metal Oxide Semiconductor Field-Effect Transistors in push-pull configuration. The switch is capable of switching high voltages up to 600 V on capacitive loads with rise and fall times on the order of 10 ns and pulse widths $\leq$ 20 ns. Using this switch it wa… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.08068v1-abstract-full').style.display = 'inline'; document.getElementById('2311.08068v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.08068v1-abstract-full" style="display: none;"> In this paper we report on the development of a fast high-voltage switch, which is based on two enhancement mode N-channel Silicon Carbide Metal Oxide Semiconductor Field-Effect Transistors in push-pull configuration. The switch is capable of switching high voltages up to 600 V on capacitive loads with rise and fall times on the order of 10 ns and pulse widths $\leq$ 20 ns. Using this switch it was demonstrated that from the charge state distribution of bunches of highly charged ions ejected from an electron beam ion trap with a specific kinetic energy, single charge states can be separated by fast switching of the high voltage applied to a Bradbury-Nielsen Gate with a resolving power of about 100. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.08068v1-abstract-full').style.display = 'none'; document.getElementById('2311.08068v1-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 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Rev. Sci. Instrum. 93, 094702 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.19365">arXiv:2310.19365</a> <span> [<a href="https://arxiv.org/pdf/2310.19365">pdf</a>, <a href="https://arxiv.org/format/2310.19365">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> </div> <p class="title is-5 mathjax"> Observation of a low-lying metastable electronic state in highly charged lead by Penning-trap mass spectrometry </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Lyu%2C+C">Chunhai Lyu</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Zolt谩n Harman</a>, <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">Jost Herkenhoff</a>, <a href="/search/?searchtype=author&query=Indelicato%2C+P">Paul Indelicato</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">Christoph H. Keitel</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">Daniel Lange</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yuri N. Novikov</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</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="2310.19365v1-abstract-short" style="display: inline;"> Highly charged ions (HCIs) offer many opportunities for next-generation clock research due to the vast landscape of available electronic transitions in different charge states. The development of XUV frequency combs has enabled the search for clock transitions based on shorter wavelengths in HCIs. However, without initial knowledge of the energy of the clock states, these narrow transitions are di… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.19365v1-abstract-full').style.display = 'inline'; document.getElementById('2310.19365v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.19365v1-abstract-full" style="display: none;"> Highly charged ions (HCIs) offer many opportunities for next-generation clock research due to the vast landscape of available electronic transitions in different charge states. The development of XUV frequency combs has enabled the search for clock transitions based on shorter wavelengths in HCIs. However, without initial knowledge of the energy of the clock states, these narrow transitions are difficult to be probed by lasers. In this Letter, we provide experimental observation and theoretical calculation of a long-lived electronic state in Nb-like Pb$^{41+}$ which could be used as a clock state. With the mass spectrometer Pentatrap, the excitation energy of this metastable state is directly determined as a mass difference at an energy of 31.2(8) eV, corresponding to one of the most precise relative mass determinations to date with a fractional uncertainty of $4\times10^{-12}$. This experimental result agrees within 1 $蟽$ with two partially different \textit{ab initio} multi-configuration Dirac-Hartree-Fock calculations of 31.68(13) eV and 31.76(35) eV, respectively. With a calculated lifetime of 26.5(5.3) days, the transition from this metastable state to the ground state bears a quality factor of $1.1\times10^{23}$ and allows for the construction of a HCI clock with a fractional frequency instability of $<10^{-19}/\sqrt蟿$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.19365v1-abstract-full').style.display = 'none'; document.getElementById('2310.19365v1-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 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.11119">arXiv:2310.11119</a> <span> [<a href="https://arxiv.org/pdf/2310.11119">pdf</a>, <a href="https://arxiv.org/format/2310.11119">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> </div> <p class="title is-5 mathjax"> High-precision determination of $g$ factors and masses of $^{20}\text{Ne}^{9+}$ and $^{22}\text{Ne}^{9+}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Hei%C3%9Fe%2C+F">F. Hei脽e</a>, <a href="/search/?searchtype=author&query=Door%2C+M">M. Door</a>, <a href="/search/?searchtype=author&query=Sailer%2C+T">T. Sailer</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">P. Filianin</a>, <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">J. Herkenhoff</a>, <a href="/search/?searchtype=author&query=K%C3%B6nig%2C+C+M">C. M. K枚nig</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">K. Kromer</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">D. Lange</a>, <a href="/search/?searchtype=author&query=Morgner%2C+J">J. Morgner</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">A. Rischka</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Ch. Schweiger</a>, <a href="/search/?searchtype=author&query=Tu.%2C+B">B. Tu.</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Y. N. Novikov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Sturm%2C+S">S. Sturm</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</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="2310.11119v1-abstract-short" style="display: inline;"> We present the measurements of individual bound electron $g$ factors of $^{20}\text{Ne}^{9+}$ and $^{22}\text{Ne}^{9+}$ on the relative level of $0.1\,\text{parts}$ per billion. The comparison with theory represents the most stringent test of bound-state QED in strong electric fields. A dedicated mass measurement results in $m\left(^{20}\text{Ne}\right)=19.992\,440\,168\,77\,(9)\,\text{u}$, which… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.11119v1-abstract-full').style.display = 'inline'; document.getElementById('2310.11119v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.11119v1-abstract-full" style="display: none;"> We present the measurements of individual bound electron $g$ factors of $^{20}\text{Ne}^{9+}$ and $^{22}\text{Ne}^{9+}$ on the relative level of $0.1\,\text{parts}$ per billion. The comparison with theory represents the most stringent test of bound-state QED in strong electric fields. A dedicated mass measurement results in $m\left(^{20}\text{Ne}\right)=19.992\,440\,168\,77\,(9)\,\text{u}$, which improves the current literature value by a factor of nineteen, disagrees by $4$ standard deviations and represents the most precisely measured mass value in atomic mass units. Together, these measurements yield an electron mass on the relative level of $0.1\,\text{ppb}$ with $m_{\text{e}}=5.485\,799\,090\,99\,(59) \times 10^{-4}\,\text{u}$ as well as a factor of eight improved $m\left(^{22}\text{Ne}\right)=21.991\,385\,098\,2\,(26)\,\text{u}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.11119v1-abstract-full').style.display = 'none'; document.getElementById('2310.11119v1-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> 17 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2302.00780">arXiv:2302.00780</a> <span> [<a href="https://arxiv.org/pdf/2302.00780">pdf</a>, <a href="https://arxiv.org/format/2302.00780">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</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/10.1093/mnras/stad2417">10.1093/mnras/stad2417 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> On constraining Cosmology and the Halo Mass Function with Weak Gravitational Lensing </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Gu%2C+S">Shiming Gu</a>, <a href="/search/?searchtype=author&query=Dor%2C+M">Marc-Antoine Dor</a>, <a href="/search/?searchtype=author&query=van+Waerbeke%2C+L">Ludovic van Waerbeke</a>, <a href="/search/?searchtype=author&query=Asgari%2C+M">Marika Asgari</a>, <a href="/search/?searchtype=author&query=Mead%2C+A">Alexander Mead</a>, <a href="/search/?searchtype=author&query=Tr%C3%B6ster%2C+T">Tilman Tr枚ster</a>, <a href="/search/?searchtype=author&query=Yan%2C+Z">Ziang Yan</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="2302.00780v3-abstract-short" style="display: inline;"> The discrepancy between the weak lensing (WL) and the {\it Planck} measurements of $S_8$ has been a subject of several studies. These studies tend to show that a suppression of the amplitude of the mass power spectrum $P(k)$ at high $k$ could resolve it. The WL signal at small-scale is sensitive to various effects, such as baryonic effects and intrinsic alignment. The accuracy of $P(k)$ depends on… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.00780v3-abstract-full').style.display = 'inline'; document.getElementById('2302.00780v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2302.00780v3-abstract-full" style="display: none;"> The discrepancy between the weak lensing (WL) and the {\it Planck} measurements of $S_8$ has been a subject of several studies. These studies tend to show that a suppression of the amplitude of the mass power spectrum $P(k)$ at high $k$ could resolve it. The WL signal at small-scale is sensitive to various effects, such as baryonic effects and intrinsic alignment. The accuracy of $P(k)$ depends on the modelling precision of these effects. A common approach for calculating $P(k)$ relies on a halo model. Amongst the various components necessary for the construction of $P(k)$, the halo mass function (HMF) is an important one. Traditionally, the HMF has been assumed to follow a fixed model. Recent literature shows that baryonic physics, amongst several other factors, could affect the HMF. In this study, we investigate the impact of allowing the HMF to vary. This provides a way of testing the validity of the halo model-HMF calibration using data. We find that the {\it Planck} cosmology is not compatible with the vanilla HMF for both the DES-y3 and the KiDS-1000 data. When the cosmology and the HMF parameters are allowed to vary, the {\it Planck} cosmology is no longer in tension. The modified HMF predicts a matter power spectrum with a $\sim 25\%$ power loss at $k\sim 1~{\rm h/Mpc}$, in agreement with the recent studies. We show that Stage IV surveys will be able to measure the HMF parameters with a few percent accuracy. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.00780v3-abstract-full').style.display = 'none'; document.getElementById('2302.00780v3-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 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2023. </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 (including appendixes), 10 figures, 3 tables, main results in Figs. 5&6</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> 2023, MNRAS, stad2417 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2212.00350">arXiv:2212.00350</a> <span> [<a href="https://arxiv.org/pdf/2212.00350">pdf</a>, <a href="https://arxiv.org/format/2212.00350">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Robotics">cs.RO</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="Systems and Control">eess.SY</span> </div> </div> <p class="title is-5 mathjax"> AstroSLAM: Autonomous Monocular Navigation in the Vicinity of a Celestial Small Body -- Theory and Experiments </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Dor%2C+M">Mehregan Dor</a>, <a href="/search/?searchtype=author&query=Driver%2C+T">Travis Driver</a>, <a href="/search/?searchtype=author&query=Getzandanner%2C+K">Kenneth Getzandanner</a>, <a href="/search/?searchtype=author&query=Tsiotras%2C+P">Panagiotis Tsiotras</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="2212.00350v1-abstract-short" style="display: inline;"> We propose AstroSLAM, a standalone vision-based solution for autonomous online navigation around an unknown target small celestial body. AstroSLAM is predicated on the formulation of the SLAM problem as an incrementally growing factor graph, facilitated by the use of the GTSAM library and the iSAM2 engine. By combining sensor fusion with orbital motion priors, we achieve improved performance over… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.00350v1-abstract-full').style.display = 'inline'; document.getElementById('2212.00350v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2212.00350v1-abstract-full" style="display: none;"> We propose AstroSLAM, a standalone vision-based solution for autonomous online navigation around an unknown target small celestial body. AstroSLAM is predicated on the formulation of the SLAM problem as an incrementally growing factor graph, facilitated by the use of the GTSAM library and the iSAM2 engine. By combining sensor fusion with orbital motion priors, we achieve improved performance over a baseline SLAM solution. We incorporate orbital motion constraints into the factor graph by devising a novel relative dynamics factor, which links the relative pose of the spacecraft to the problem of predicting trajectories stemming from the motion of the spacecraft in the vicinity of the small body. We demonstrate the excellent performance of AstroSLAM using both real legacy mission imagery and trajectory data courtesy of NASA's Planetary Data System, as well as real in-lab imagery data generated on a 3 degree-of-freedom spacecraft simulator test-bed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.00350v1-abstract-full').style.display = 'none'; document.getElementById('2212.00350v1-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 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2022. </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">28 pages, 19 figures. View AstroSLAM in action: https://youtu.be/Uf8j-AxfMM0</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2210.11602">arXiv:2210.11602</a> <span> [<a href="https://arxiv.org/pdf/2210.11602">pdf</a>, <a href="https://arxiv.org/format/2210.11602">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="Atomic Physics">physics.atom-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/10.1140/epja/s10050-022-00860-1">10.1140/epja/s10050-022-00860-1 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> High-precision mass measurement of doubly magic $^{208}$Pb </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Lyu%2C+C">Chunhai Lyu</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Zolt谩n Harman</a>, <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">Jost Herkenhoff</a>, <a href="/search/?searchtype=author&query=Huang%2C+W">Wenjia Huang</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">Christoph H. Keitel</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">Daniel Lange</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yuri N. Novikov</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</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="2210.11602v1-abstract-short" style="display: inline;"> The absolute atomic mass of $^{208}$Pb has been determined with a fractional uncertainty of $7\times 10^{-11}$ by measuring the cyclotron-frequency ratio $R$ of $^{208}$Pb$^{41+}$ to $^{132}$Xe$^{26+}$ with the high-precision Penning-trap mass spectrometer Pentatrap and computing the binding energies $E_{\text{Pb}}$ and $E_{\text{Xe}}$ of the missing 41 and 26 atomic electrons, respectively, with… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.11602v1-abstract-full').style.display = 'inline'; document.getElementById('2210.11602v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.11602v1-abstract-full" style="display: none;"> The absolute atomic mass of $^{208}$Pb has been determined with a fractional uncertainty of $7\times 10^{-11}$ by measuring the cyclotron-frequency ratio $R$ of $^{208}$Pb$^{41+}$ to $^{132}$Xe$^{26+}$ with the high-precision Penning-trap mass spectrometer Pentatrap and computing the binding energies $E_{\text{Pb}}$ and $E_{\text{Xe}}$ of the missing 41 and 26 atomic electrons, respectively, with the ab initio fully relativistic multi-configuration Dirac-Hartree-Fock (MCDHF) method. $R$ has been measured with a relative precision of $9\times 10^{-12}$. $E_{\text{Pb}}$ and $E_{\text{Xe}}$ have been computed with an uncertainty of 9.1 eV and 2.1 eV, respectively, yielding $207.976\,650\,571(14)$ u (u$=9.314\,941\,024\,2(28)\times 10^{8}$ eV/c$^2$) for the $^{208}$Pb neutral atomic mass. This result agrees within $1.2蟽$ with that from the Atomic-Mass Evaluation (AME) 2020, while improving the precision by almost two orders of magnitude. The new mass value directly improves the mass precision of 14 nuclides in the region of Z=81-84 and is the most precise mass value with A>200. Thus, the measurement establishes a new region of reference mass values which can be used e.g. for precision mass determination of transuranium nuclides, including the superheavies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.11602v1-abstract-full').style.display = 'none'; document.getElementById('2210.11602v1-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> 20 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2022. </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">8 pages, 4 figures, to be published in EPJA</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. A 58, 202 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2208.02053">arXiv:2208.02053</a> <span> [<a href="https://arxiv.org/pdf/2208.02053">pdf</a>, <a href="https://arxiv.org/format/2208.02053">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="Earth and Planetary Astrophysics">astro-ph.EP</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="Robotics">cs.RO</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/10.1016/j.actaastro.2023.01.009">10.1016/j.actaastro.2023.01.009 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> AstroVision: Towards Autonomous Feature Detection and Description for Missions to Small Bodies Using Deep Learning </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Driver%2C+T">Travis Driver</a>, <a href="/search/?searchtype=author&query=Skinner%2C+K">Katherine Skinner</a>, <a href="/search/?searchtype=author&query=Dor%2C+M">Mehregan Dor</a>, <a href="/search/?searchtype=author&query=Tsiotras%2C+P">Panagiotis Tsiotras</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="2208.02053v1-abstract-short" style="display: inline;"> Missions to small celestial bodies rely heavily on optical feature tracking for characterization of and relative navigation around the target body. While deep learning has led to great advancements in feature detection and description, training and validating data-driven models for space applications is challenging due to the limited availability of large-scale, annotated datasets. This paper intr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.02053v1-abstract-full').style.display = 'inline'; document.getElementById('2208.02053v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2208.02053v1-abstract-full" style="display: none;"> Missions to small celestial bodies rely heavily on optical feature tracking for characterization of and relative navigation around the target body. While deep learning has led to great advancements in feature detection and description, training and validating data-driven models for space applications is challenging due to the limited availability of large-scale, annotated datasets. This paper introduces AstroVision, a large-scale dataset comprised of 115,970 densely annotated, real images of 16 different small bodies captured during past and ongoing missions. We leverage AstroVision to develop a set of standardized benchmarks and conduct an exhaustive evaluation of both handcrafted and data-driven feature detection and description methods. Next, we employ AstroVision for end-to-end training of a state-of-the-art, deep feature detection and description network and demonstrate improved performance on multiple benchmarks. The full benchmarking pipeline and the dataset will be made publicly available to facilitate the advancement of computer vision algorithms for space applications. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.02053v1-abstract-full').style.display = 'none'; document.getElementById('2208.02053v1-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 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.09184">arXiv:2203.09184</a> <span> [<a href="https://arxiv.org/pdf/2203.09184">pdf</a>, <a href="https://arxiv.org/format/2203.09184">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/10.1103/PhysRevLett.124.113001">10.1103/PhysRevLett.124.113001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Mass-difference measurements on heavy nuclides with at an eV/c2 accuracy level with PENTATRAP </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Rischka%2C+A">A. Rischka</a>, <a href="/search/?searchtype=author&query=Cakir%2C+H">H. Cakir</a>, <a href="/search/?searchtype=author&query=Door%2C+M">M. Door</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">P. Filianin</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Z. Harman</a>, <a href="/search/?searchtype=author&query=Huang%2C+W+J">W. J. Huang</a>, <a href="/search/?searchtype=author&query=Indelicato%2C+P">P. Indelicato</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">C. H. Keitel</a>, <a href="/search/?searchtype=author&query=Koenig%2C+C+M">C. M. Koenig</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">K. Kromer</a>, <a href="/search/?searchtype=author&query=Mueller%2C+M">M. Mueller</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Y. N. Novikov</a>, <a href="/search/?searchtype=author&query=Schuessler%2C+R+X">R. X. Schuessler</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Ch. Schweiger</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</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="2203.09184v1-abstract-short" style="display: inline;"> First ever measurements of the ratios of free cyclotron frequencies of heavy highly charged ions with Z>50 with relative uncertainties close to 1e-11 are presented. Such accurate measurements have become realistic due to the construction of the novel cryogenic multi-Penning-trap mass spectrometer PENTATRAP. Based on the measured frequency ratios, the mass differences of five pairs of stable xenon… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.09184v1-abstract-full').style.display = 'inline'; document.getElementById('2203.09184v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.09184v1-abstract-full" style="display: none;"> First ever measurements of the ratios of free cyclotron frequencies of heavy highly charged ions with Z>50 with relative uncertainties close to 1e-11 are presented. Such accurate measurements have become realistic due to the construction of the novel cryogenic multi-Penning-trap mass spectrometer PENTATRAP. Based on the measured frequency ratios, the mass differences of five pairs of stable xenon isotopes, ranging from 126Xe to 134Xe, have been determined. Moreover, the first direct measurement of an electron binding energy in a heavy highly charged ion, namely of the 37th atomic electron in xenon, with an uncertainty of a few eV is demonstrated. The obtained value agrees with the calculated one using two independent different implementations of the multiconfiguration Dirac-Hartree-Fock method. PENTATRAP opens the door to future measurements of electron binding energies in highly charged heavy ions for more stringent tests of bound-state quantum electrodynamics in strong electromagnetic fields and for an investigation of the manifestation of Light Dark Matter in isotopic chains of certain chemical elements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.09184v1-abstract-full').style.display = 'none'; document.getElementById('2203.09184v1-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> 17 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </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">2 figures, 1 table, 28 references</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 124 (2020) 113001 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2110.01404">arXiv:2110.01404</a> <span> [<a href="https://arxiv.org/pdf/2110.01404">pdf</a>, <a href="https://arxiv.org/format/2110.01404">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-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/10.1063/5.0064369">10.1063/5.0064369 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A Digital Feedback System for Advanced Ion Manipulation Techniques in Penning Traps </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">Jost Herkenhoff</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Huang%2C+W">Wenjia Huang</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">Daniel Lange</a>, <a href="/search/?searchtype=author&query=Sch%C3%BCssler%2C+R+X">Rima X. Sch眉ssler</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</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="2110.01404v1-abstract-short" style="display: inline;"> The possibility to apply active feedback to a single ion in a Penning trap using a fully digital system is demonstrated. Previously realized feedback systems rely on analog circuits that are susceptible to environmental fluctuations and long term drifts, as well as being limited to the specific task they were designed for. The presented system is implemented using an FPGA-based platform (STEMlab),… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.01404v1-abstract-full').style.display = 'inline'; document.getElementById('2110.01404v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2110.01404v1-abstract-full" style="display: none;"> The possibility to apply active feedback to a single ion in a Penning trap using a fully digital system is demonstrated. Previously realized feedback systems rely on analog circuits that are susceptible to environmental fluctuations and long term drifts, as well as being limited to the specific task they were designed for. The presented system is implemented using an FPGA-based platform (STEMlab), offering greater flexibility, higher temporal stability and the possibility for highly dynamic variation of feedback parameters. The system's capabilities were demonstrated by applying feedback to the ion detection system primarily consisting of a resonant circuit. This allowed shifts in its resonance frequency of up to several kHz and free modification of its quality factor within two orders of magnitude, which reduces the temperature of a single ion by a factor of 6. Furthermore, a phase-sensitive detection technique for the axial ion oscillation was implemented, which reduces the current measurement time by two orders of magnitude while simultaneously eliminating model-related systematic uncertainties. The use of FPGA technology allowed the implementation of a fully-featured data acquisition system, making it possible to realize feedback techniques that require constant monitoring of the ion signal. This was successfully used to implement a single-ion self-excited oscillator. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.01404v1-abstract-full').style.display = 'none'; document.getElementById('2110.01404v1-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 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2021. </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">The following article has been accepted by Review of Scientific Instruments. After it is published, it will be found at https://aip.scitation.org/journal/rsi</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2108.07039">arXiv:2108.07039</a> <span> [<a href="https://arxiv.org/pdf/2108.07039">pdf</a>, <a href="https://arxiv.org/format/2108.07039">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> </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/PhysRevLett.127.072502">10.1103/PhysRevLett.127.072502 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> $\text{Direct}~Q\text{-Value Determination of the}~尾^-~\text{Decay of} ~^{187}\text{Re}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Filianin%2C+P">P. Filianin</a>, <a href="/search/?searchtype=author&query=Lyu%2C+C">C. Lyu</a>, <a href="/search/?searchtype=author&query=Door%2C+M">M. Door</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Huang%2C+W+J">W. J. Huang</a>, <a href="/search/?searchtype=author&query=Haverkort%2C+M">M. Haverkort</a>, <a href="/search/?searchtype=author&query=Indelicato%2C+P">P. Indelicato</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">C. H. Keitel</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">K. Kromer</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">D. Lange</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Y. N. Novikov</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">A. Rischka</a>, <a href="/search/?searchtype=author&query=Sch%C3%BCssler%2C+R+X">R. X. Sch眉ssler</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Ch. Schweiger</a>, <a href="/search/?searchtype=author&query=Sturm%2C+S">S. Sturm</a>, <a href="/search/?searchtype=author&query=Ulmer%2C+S">S. Ulmer</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Z. Harman</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</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="2108.07039v1-abstract-short" style="display: inline;"> The cyclotron frequency ratio of $^{187}\mathrm{Os}^{29+}$ to $^{187}\mathrm{Re}^{29+}$ ions was measured with the Penning-trap mass spectrometer PENTATRAP. The achieved result of $R=1.000\:000\:013\:882(5)$ is to date the most precise such measurement performed on ions. Furthermore, the total binding-energy difference of the 29 missing electrons in Re and Os was calculated by relativistic multico… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.07039v1-abstract-full').style.display = 'inline'; document.getElementById('2108.07039v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2108.07039v1-abstract-full" style="display: none;"> The cyclotron frequency ratio of $^{187}\mathrm{Os}^{29+}$ to $^{187}\mathrm{Re}^{29+}$ ions was measured with the Penning-trap mass spectrometer PENTATRAP. The achieved result of $R=1.000\:000\:013\:882(5)$ is to date the most precise such measurement performed on ions. Furthermore, the total binding-energy difference of the 29 missing electrons in Re and Os was calculated by relativistic multiconfiguration methods, yielding the value of $螖E = 53.5(10)$ eV. Finally, using the achieved results, the mass difference between neutral $^{187}$Re and $^{187}$Os, i.e., the $Q$ value of the $尾^-$ decay of $^{187}$Re, is determined to be 2470.9(13) eV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.07039v1-abstract-full').style.display = 'none'; document.getElementById('2108.07039v1-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, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2021. </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">6 pages, 4 figures, 1 table</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 127 (2021) 072502 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.04892">arXiv:2005.04892</a> <span> [<a href="https://arxiv.org/pdf/2005.04892">pdf</a>, <a href="https://arxiv.org/format/2005.04892">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-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/10.1038/s41586-020-2221-0">10.1038/s41586-020-2221-0 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Detection of metastable electronic states by Penning trap mass spectrometry </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Sch%C3%BCssler%2C+R+X">Rima Xenia Sch眉ssler</a>, <a href="/search/?searchtype=author&query=Bekker%2C+H">Hendrik Bekker</a>, <a href="/search/?searchtype=author&query=Bra%C3%9F%2C+M">Martin Bra脽</a>, <a href="/search/?searchtype=author&query=Cakir%2C+H">Halil Cakir</a>, <a href="/search/?searchtype=author&query=L%C3%B3pez-Urrutia%2C+J+R+C">Jos茅 R. Crespo L贸pez-Urrutia</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Zoltan Harman</a>, <a href="/search/?searchtype=author&query=Haverkort%2C+M+W">Maurits W. Haverkort</a>, <a href="/search/?searchtype=author&query=Huang%2C+W+J">Wen Jia Huang</a>, <a href="/search/?searchtype=author&query=Indelicato%2C+P">Paul Indelicato</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">Christoph Helmut Keitel</a>, <a href="/search/?searchtype=author&query=K%C3%B6nig%2C+C+M">Charlotte Maria K枚nig</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=M%C3%BCller%2C+M">Marius M眉ller</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yuri N. Novikov</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">Alexander Rischka</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=Sturm%2C+S">Sven Sturm</a>, <a href="/search/?searchtype=author&query=Ulmer%2C+S">Stefan Ulmer</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Ssergey Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</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="2005.04892v1-abstract-short" style="display: inline;"> State-of-the-art optical clocks achieve fractional precisions of $10^{-18}$ and below using ensembles of atoms in optical lattices or individual ions in radio-frequency traps. Promising candidates for novel clocks are highly charged ions (HCIs) and nuclear transitions, which are largely insensitive to external perturbations and reach wavelengths beyond the optical range, now becoming accessible to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.04892v1-abstract-full').style.display = 'inline'; document.getElementById('2005.04892v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.04892v1-abstract-full" style="display: none;"> State-of-the-art optical clocks achieve fractional precisions of $10^{-18}$ and below using ensembles of atoms in optical lattices or individual ions in radio-frequency traps. Promising candidates for novel clocks are highly charged ions (HCIs) and nuclear transitions, which are largely insensitive to external perturbations and reach wavelengths beyond the optical range, now becoming accessible to frequency combs. However, insufficiently accurate atomic structure calculations still hinder the identification of suitable transitions in HCIs. Here, we report on the discovery of a long-lived metastable electronic state in a HCI by measuring the mass difference of the ground and the excited state in Re, the first non-destructive, direct determination of an electronic excitation energy. This result agrees with our advanced calculations, and we confirmed them with an Os ion with the same electronic configuration. We used the high-precision Penning-trap mass spectrometer PENTATRAP, unique in its synchronous use of five individual traps for simultaneous mass measurements. The cyclotron frequency ratio $R$ of the ion in the ground state to the metastable state could be determined to a precision of $未R=1\cdot 10^{-11}$, unprecedented in the heavy atom regime. With a lifetime of about 130 days, the potential soft x-ray frequency reference at $谓=4.86\cdot 10^{16}\,\text{Hz}$ has a linewidth of only $螖谓\approx 5\cdot 10^{-8}\,\text{Hz}$, and one of the highest electronic quality factor ($Q=\frac谓{螖谓}\approx 10^{24}$) ever seen in an experiment. Our low uncertainty enables searching for more HCI soft x-ray clock transitions, needed for promising precision studies of fundamental physics in a thus far unexplored frontier. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.04892v1-abstract-full').style.display = 'none'; document.getElementById('2005.04892v1-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 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nature 581, 42-46 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1911.05519">arXiv:1911.05519</a> <span> [<a href="https://arxiv.org/pdf/1911.05519">pdf</a>, <a href="https://arxiv.org/format/1911.05519">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link 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="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/10.1063/1.5128331">10.1063/1.5128331 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Production of highly charged ions of rare species by laser-induced desorption inside an electron beam ion trap </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=K%C3%B6nig%2C+C">Charlotte K枚nig</a>, <a href="/search/?searchtype=author&query=L%C3%B3pez-Urrutia%2C+J+R+C">Jos茅 R. Crespo L贸pez-Urrutia</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Dorrer%2C+H">Holger Dorrer</a>, <a href="/search/?searchtype=author&query=D%C3%BCllmann%2C+C+E">Christoph E. D眉llmann</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Huang%2C+W">Wenjia Huang</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Micke%2C+P">Peter Micke</a>, <a href="/search/?searchtype=author&query=M%C3%BCller%2C+M">Marius M眉ller</a>, <a href="/search/?searchtype=author&query=Renisch%2C+D">Dennis Renisch</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">Alexander Rischka</a>, <a href="/search/?searchtype=author&query=Sch%C3%BCssler%2C+R+X">Rima X. Sch眉ssler</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</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="1911.05519v1-abstract-short" style="display: inline;"> This paper reports on the development and testing of a novel, highly efficient technique for the injection of very rare species into electron beam ion traps (EBITs) for the production of highly charged ions (HCI). It relies on in-trap laser-induced desorption of atoms from a sample brought very close to the electron beam resulting in a very high capture efficiency in the EBIT. We have demonstrated… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1911.05519v1-abstract-full').style.display = 'inline'; document.getElementById('1911.05519v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1911.05519v1-abstract-full" style="display: none;"> This paper reports on the development and testing of a novel, highly efficient technique for the injection of very rare species into electron beam ion traps (EBITs) for the production of highly charged ions (HCI). It relies on in-trap laser-induced desorption of atoms from a sample brought very close to the electron beam resulting in a very high capture efficiency in the EBIT. We have demonstrated a steady production of HCI of the stable isotope $^{165}\mathrm{Ho}$ from samples of only $10^{12}$ atoms ($\sim$ 300 pg) in charge states up to 45+. HCI of these species can be subsequently extracted for use in other experiments or stored in the trapping volume of the EBIT for spectroscopic measurements. The high efficiency of this technique expands the range of rare isotope HCIs available for high-precision nuclear mass and spectroscopic measurements. A first application of this technique is the production of HCI of the synthetic radioisotope $^{163}\mathrm{Ho}$ for a high-precision measurement of the $Q_{\mathrm{EC}}$-value of the electron capture in $^{163}\mathrm{Ho}$ within the Electron Capture in Holmium experiment (ECHo collaboration) ultimately leading to a measurement of the electron neutrino mass with an uncertainty on the sub-eV level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1911.05519v1-abstract-full').style.display = 'none'; document.getElementById('1911.05519v1-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 November, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1910.00046">arXiv:1910.00046</a> <span> [<a href="https://arxiv.org/pdf/1910.00046">pdf</a>, <a href="https://arxiv.org/format/1910.00046">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="Systems and Control">eess.SY</span> </div> </div> <p class="title is-5 mathjax"> C-DOC: Co-State Desensitized Optimal Control </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Makkapati%2C+V+R">Venkata Ramana Makkapati</a>, <a href="/search/?searchtype=author&query=Maity%2C+D">Dipankar Maity</a>, <a href="/search/?searchtype=author&query=Dor%2C+M">Mehregan Dor</a>, <a href="/search/?searchtype=author&query=Tsiotras%2C+P">Panagiotis Tsiotras</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="1910.00046v1-abstract-short" style="display: inline;"> In this paper, co-states are used to develop a framework that desensitizes the optimal cost. A general formulation for an optimal control problem with fixed final time is considered. The proposed scheme involves elevating the parameters of interest into states, and further augmenting the co-state equations of the optimal control problem to the dynamical model. A running cost that penalizes the co-… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1910.00046v1-abstract-full').style.display = 'inline'; document.getElementById('1910.00046v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1910.00046v1-abstract-full" style="display: none;"> In this paper, co-states are used to develop a framework that desensitizes the optimal cost. A general formulation for an optimal control problem with fixed final time is considered. The proposed scheme involves elevating the parameters of interest into states, and further augmenting the co-state equations of the optimal control problem to the dynamical model. A running cost that penalizes the co-states of the targeted parameters is then added to the original cost function. The solution obtained by minimizing the augmented cost yields a control which reduces the dispersion of the original cost with respect to parametric variations. The relationship between co-states and the cost-to-go function, for any given control law, is established substantiating the approach. Numerical examples and Monte-Carlo simulations that demonstrate the proposed scheme are discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1910.00046v1-abstract-full').style.display = 'none'; document.getElementById('1910.00046v1-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, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2019. </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

CINXE.COM

Search | arXiv e-print repository