Listening to the quantum vacuum: a perspective on the dynamical Casimir effect

<!DOCTYPE html> <html xml:lang="en-gb" lang="en-gb" dir="ltr"> <head> <meta name="viewport" content="width=device-width, initial-scale=1.0, shrink-to-fit=no"> <base href="https://www.europhysicsnews.org/articles/epn/abs/2020/04/epn2020514p18/epn2020514p18.html" /> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <meta name="keywords" content="Europhysics News, EDP Sciences, journal, EPS" /> <meta name="robots" content="index, follow, noarchive" /> <meta name="description" content="Europhysics News is the magazine of the European physics community" /> <title>Listening to the quantum vacuum: a perspective on the dynamical Casimir effect | Europhysics News</title> <link rel="stylesheet" href="/libraries/jquery/jquery.multiselect.css" type="text/css" /> <link rel="stylesheet" href="/libraries/jquery/jquery.qtip/jquery.qtip.min.css" type="text/css" /> <link rel="stylesheet" href="/libraries/jquery/jquery.magnific-popup.css" type="text/css" /> <link rel="stylesheet" href="/p/jquery.php/ui/1.12.0/themes/base/jquery-ui.css" type="text/css" /> <link rel="stylesheet" href="/templates/template1/css/com_article.css" type="text/css" /> <link rel="stylesheet" href="/templates/template1/css/com_article_hljs_github.min.css" type="text/css" /> <link rel="stylesheet" href="/templates/template1/css/mod_article_bookmarking.css" type="text/css" /> <link rel="stylesheet" href="/templates/template1/css/mod_solr.css" type="text/css" /> <script src="/p/jquery.php/jquery-3.1.0.min.js" type="text/javascript"></script> <script src="/plugins/system/jqueryeasy/jquerynoconflict.js" type="text/javascript"></script> <script src="/p/jquery.php/ui/1.12.0/jquery-ui.min.js" type="text/javascript"></script> <script src="/libraries/jquery/jquery.multiselect.min.js" type="text/javascript"></script> <script src="/libraries/jquery/jquery.qtip/jquery.qtip.min.js" type="text/javascript"></script> <script src="/libraries/jquery/jquery.magnific-popup.min.js" type="text/javascript"></script> <script src="https://www.europhysicsnews.org/components/com_article/assets/js/highlight/highlight.min.js" type="text/javascript"></script> <script src="https://www.europhysicsnews.org/components/com_article/assets/js/article.js" type="text/javascript"></script> <script src="https://www.europhysicsnews.org/components/com_article/assets/js/highlight/highlight.js" type="text/javascript"></script> <script src="https://www.googletagmanager.com/gtag/js?id=G-S2LKMZBHJL" type="text/javascript"></script> <script src="/modules/mod_article_bookmarking/assets/js/bookmarking.js" type="text/javascript"></script> <script src="/libraries/jquery/jquery.autocomplete.js" type="text/javascript"></script> <script type="text/javascript"> var ARTICLE_CLICK_VIEW = "Click to view fullscreen"; var ARTICLE_CLICK_HIDE = "Click anywhere to hide the fullscreen overlay"; var ARTICLE_CLICK_MOVIE = "Click to play the movie"; var COM_ARTICLE_DISPLAY_EQUATION_AS = "Display equations as"; var COM_ARTICLE_COPY_IN_CLIPBOARD = "LaTeX copied in clipboard!"; const MATHML_DISPLAY = "mathml"; window.dataLayer = window.dataLayer || []; function gtag() {dataLayer.push(arguments);} gtag('js', new Date()); gtag('consent', 'default', { 'ad_storage': 'denied', 'ad_user_data': 'denied', 'ad_personalization': 'denied', 'analytics_storage': 'denied', 'wait_for_update': 500 }); gtag('config', 'G-S2LKMZBHJL', { 'edpsname': 'epn', 'site_name': 'Europhysics News', 'plateform': 'journal', 'plateform_type': 'edp', 'server_host': 'ovh-canada' });gtag('config', 'user_properties', { 'edpsname': 'epn', 'site_name': 'Europhysics News', 'plateform': 'journal', 'plateform_type': 'edp', 'server_host': 'ovh-canada' }); </script> <link title="schema(PRISM)" rel="schema.prism" href="http://prismstandard.org/namespaces/1.2/basic/"> <meta name="citation_journal_title" content="Europhysics News"> <meta name="citation_journal_abbrev" content="Europhysics News"> <meta name="citation_publisher" content="EDP Sciences"> <meta name="citation_author" content="Gheorghe Sorin Paraoanu"> <meta name="citation_author_institution" content="QTF Centre of Excellence, Department of Applied Physics, Aalto University School of Science, P.O. 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<td>Features</td> </tr> <tr> <th>DOI</th> <td></td> <td> <a href="https://doi.org/10.1051/epn/2020402"> https://doi.org/10.1051/epn/2020402 </a> </td> </tr> <tr> <th>Published online</th> <td></td> <td> 30 September 2020 </td> </tr> </table> </div> <div id="article"> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"> <div id="contenu-min"> <div id="head"> <i>Europhysics News</i> <b>51/4</b>, 2020, p. 18-20<h2 class="title">Listening to the quantum vacuum: a perspective on the dynamical Casimir effect</h2> <div class="article-authors"><p class="bold"><span id="epn2020514p18-author-1" data-url="/component/author/?dkey=10.1051/epn/2020402&n=1" class="author">Gheorghe Sorin Paraoanu</span><sup>1</sup> and <span id="epn2020514p18-author-2" data-url="/component/author/?dkey=10.1051/epn/2020402&n=2" class="author">Göran Johansson</span><sup>2</sup></p></div> <p class="aff"> <sup>1</sup> QTF Centre of Excellence, Department of Applied Physics, Aalto University School of Science, P.O. Box 15100, FI-00076 AALTO, Finland <br> <sup>2</sup> Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-412 96 Gothenburg, Sweden <br></p> <p class="bold"><a name="abs"></a>Abstract</p> <p>Modern quantum field theory has offered us a very intriguing picture of empty space. The vacuum state is no longer an inert, motionless state. We are instead dealing with an entity teeming with fluctuations that continuously produce virtual particles popping in and out of existence. The dynamical Casimir effect is a paradigmatic phenomenon, whereby these particles are converted into real particles (photons) by changing the boundary conditions of the field. It was predicted 50 years ago by Gerald T. Moore and it took more than 40 years until the first experimental verification.</p> </div> <p><i>© European Physical Society, EDP Sciences, 2020</i></p> </div> </div> <div id="metrics-tabs" data-doi="10.1051/epn/2020402" data-edps_ref="epn2020514p18"> <nav class="toolbar"> <button class="toolbar-item" id="metrics-siq">Current usage metrics</button> <button class="toolbar-item" id="info">About article metrics</button> <button class="toolbar-item" id="return">Return to article</button> </nav> <div class="panel" data-for="metrics-siq"> </div> <div class="panel" data-for="metrics-alm"></div> <div class="panel" data-for="info"> <p>Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.</p> <p>Data correspond to usage on the plateform after 2015. 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