XFEL: Investigation of quantum vacuum birefringence

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{'subtitle': 'New video from the series of interviews with users of the European XFEL', 'active_start_dt_iso': '', 'active_end_dt_iso': '', 'active_start_dt': '', 'translationofid': 2367, 'keywords': [], 'langs': [u'eng', u'ger'], 'active_end_dt': '', 'title': 'Investigation of quantum vacuum birefringence ', 'media': [{'href': u'media/11517/Cowancut_thumbnail.png', 'content_type': u'image/jpeg', 'idmedia': 11517, 'filename': u'Cowancut_thumbnail.png'}], 'active_toggle': 1, 'body': 'Thomas E. Cowan about investigation of quantum vacuum birefringence using an X-ray dark-field technique (© European XFEL)moreAccording to quantum field theory, the vacuum is not really "empty". For example, it can interact with strong electromagnetic fields. This extremely weak effect should be visible in the scattering of X-ray photons in the optical field of strong lasers. As part of the <a href="../../../sites/sites_custom/site_xfel/content/e35165/e46561/e46886/e46963/e83032/xfel_file83038/06_HiBEF_Cowan_eng.pdf" target="_blank" rel="noopener">HIBEF </a>collaboration at the <a href="../../../facility/instruments/hed/index_eng.html">HED</a> experiment station of European XFEL in Schenefeld near Hamburg, a team led by Thomas E. Cowan from Helmholtz-Zentrum Dresden-Rossendorf (HZDR) is investigating whether this can be measured.<iframe class="iframeLoaded" src="https://video.desy.de/media/embed?key=f665799fe593aae4bcfbae90945ab41c&width=720&height=405&autoplay=false&controls=true&autolightsoff=false&loop=false&chapters=false&playlist=false&related=false&responsive=false&t=0" width="720" height="405" frameborder="0" scrolling="no" allowfullscreen="allowfullscreen" data-src="" aria-label="media embed code"></iframe>More EuXFEL user videos on our <a href="https://www.youtube.com/playlist?list=PLGqlZjoPulAtk24-no7sAUse9F8Ra4fKm" target="_blank" rel="noopener">YouTube playlist</a>. ', 'change_uid': u'samulatg', 'active': 1, 'dt': '2024/05/20', 'change_dt': '24/05/21 10:14:57', 'topnews': 0, 'lang': 'eng', 'titleimage': u'media/11517/Cowancut_thumbnail.png', 'idnews': 2367, 'idtitleimage': 11517, 'dtd': '2024/05/20'} eng,ger

2024/05/20

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Investigation of quantum vacuum birefringence

New video from the series of interviews with users of the European XFEL

According to quantum field theory, the vacuum is not really "empty". For example, it can interact with strong electromagnetic fields. This extremely weak effect should be visible in the scattering of X-ray photons in the optical field of strong lasers. As part of the HIBEF collaboration at the HED experiment station of European XFEL in Schenefeld near Hamburg, a team led by Thomas E. Cowan from Helmholtz-Zentrum Dresden-Rossendorf (HZDR) is investigating whether this can be measured.

More EuXFEL user videos on our YouTube playlist.

XFEL: Investigation of quantum vacuum birefringence

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Investigation of quantum vacuum birefringence

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