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<p><font face="Helvetica, Arial, sans-serif"><font
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face="Times New Roman, Times, serif"><b><span
style="font-size:14pt">Friday, March 24,
2023 - IAS High Energy Theory Seminar </span></b><span
style="font-size:14pt"></span></font></p>
<p><font face="Times New Roman, Times, serif"><span
style="font-size:14pt">"Close Encounters
of the Wormhole Kind"</span></font></p>
<p><b><font face="Times New Roman, Times, serif"
color="#ff0000"><span
style="font-size:14pt"> </span></font></b><font
face="Times New Roman, Times, serif"
color="#ff0000"><span style="font-size:14pt"><font
color="#000000">Location: Bloomberg
Lecture Hall (IAS) & Zoom</font></span></font></p>
<p><b><font color="#ff0000"> </font></b></p>
<font face="Times New Roman, Times, serif"><span
style="font-size:14pt">Zoom Link: <a
href="https://theias.zoom.us/j/84232389159?pwd=UAWukoEv3RMKL8ssHZ2nUfIwggISU7.1"
rel="nofollow noopener noreferrer nofollow
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noreferrer" target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">https://theias.zoom.us/j/84232389159?pwd=UAWukoEv3RMKL8ssHZ2nUfIwggISU7.1</a></span></font>
<p><font face="Times New Roman, Times, serif"> </font><font
face="Times New Roman, Times, serif"><span
style="font-size:14pt">Time: 1:45 PM</span></font></p>
<font face="Times New Roman, Times, serif"><span
style="font-size:14pt">Speaker: Phil Saad,
Member, School of Natural Sciences, IAS</span></font><br>
<br>
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<p><font face="Times New Roman, Times, serif"> </font></p>
<p><font face="Times New Roman, Times, serif"> <b>Abstract:
</b>Black holes are expected to exhibit
universal 'random matrix' behavior at late
times, indicative of quantum chaos. The
approach to a late-time plateau in the
spectral form factor (SFF) is a probe of
this behavior. In this talk we study the SFF
in double-scaled matrix integrals, dual to
two-dimensional black holes, and conjecture
a formula for the SFF in the limit of large
time, large density of states, and fixed
temperature. This formula provides a
convergent expansion for the plateau as a
sum over spacetime topologies (spacetime
wormholes). To understand the origin of this
series, we compare to the semiclassical
theory of “encounters” in periodic orbits.
In Jackiw-Teitelboim (JT) gravity,
encounters correspond to portions of the
moduli space integral that mutually cancel
(in the orientable case) but individually
grow at low energies. At genus one we show
how the full moduli space integral resolves
the low energy region and gives a finite
nonzero answer.</font></p>
<p><font face="Times New Roman, Times, serif">---------------------
<br>
</font></p>
<p><font face="Times New Roman, Times, serif">Lisa
Fleischer <br>
Academic Assistant <br>
School of Natural Sciences <br>
Institute for Advanced Study <br>
1 Einstein Drive Princeton, NJ 08540<br>
<a href="mailto:lisa@ias.edu" rel="nofollow
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moz-do-not-send="true"
class="moz-txt-link-freetext">lisa@ias.edu</a></font></p>
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