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						<h1 itemprop="headline">CQOM/CCQ Round Table Meeting</h1>
						
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							<p class="text--intro" itemprop="description">Kristian Knakkergaard Nielsen: Drawing calculations: diagrammatic wave functions and 2-body correlation functions</p>
						
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									<h2 class="screenreader-only">Oplysninger om arrangementet</h2>

									
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												<h3 class="news-event__info__item__header text--label-header">Tidspunkt</h3>
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														Fredag  7. maj 2021,
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														&nbsp;kl. 15:15 -  16:00
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													<p class="news-event__info__item__ical-link"><a href="/ccq/show/artikel/cqomccq-round-table-meeting-1?tx_news_pi1%5Bformat%5D=ical&amp;type=9819&amp;cHash=70f01565f920ec8cf81f9250a9d9f52b">Tilføj til kalender</a></p>
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													<h3 class="news-event__info__item__header text--label-header">Sted</h3>
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														<p>Zoom</p>
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									<p>Abstract</p>
<p>Modern quantum gas microscopy enables the measurement of spatial correlation functions in complex quantum many-body systems, such as quantum antiferromagnets. To actually calculate such correlation functions is, however, incredibly complicated in general.&nbsp;</p>
<p>In this talk, I will discuss a quantum antiferromagnet doped with holes. This systems supports the formation of magnetic polarons, forming as a consequence of the competition between the spatial delocalization of the holes and the buildup of magnetic frustrations in the antiferromagnet.&nbsp;</p>
<p>I will show you how we can&nbsp;<strong>draw</strong>&nbsp;calculations of correlation functions between the hole and surrounding spin excitations, and that this actually makes it possible to sum up an&nbsp;<strong>infinite series of diagrams&nbsp;</strong>in a highly efficient manner.&nbsp;</p>
								
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