<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<b>High Energy Theory Seminar<strong> -- </strong></b><strong></strong><strong>Monday,
February 25, 2019<br>
<br>
</strong>“Twisted Holography for the N=4 Chiral Algebra”<strong><br>
<br>
</strong>
Location: Bloomberg Lecture Hall<br>
<br>
Time: 2:30 PM<br>
<br>
Speaker(s): Kevin Costello, Perimeter Institute<br>
<br>
<strong>Description:</strong> Beem et al. used a superconformal
supercharge to localize N=4 Yang-Mills to a two-dimensional chiral
theory. I will discuss my work with Gaiotto, in which we analyze
the holographic dual of this localization. We argue that the same
localization applied to type IIB string theory yields a topological
string living on AdS_3 x S^3. We build a holographic chiral algebra
using Witten diagrams for this topological string theory, and show
that the holographic chiral algebra is isomorphic to the large N
chiral algebra in the planar limit. <br>
<pre class="moz-signature" cols="72">--
Lisa Fleischer
Academic Assistant
School of Natural Sciences
Institute for Advanced Study
Einstein Drive
Princeton, NJ 08540
609-734-8215
<a class="moz-txt-link-abbreviated" href="mailto:lisa@ias.edu">lisa@ias.edu</a></pre>
</body>
</html>