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<div><font face="Times New
Roman, Times, serif"><b><span style="font-size:14pt"></span></b></font><font face="Times New Roman,
Times, serif"><b><font face="Times New Roman,
Times, serif"><b>Friday,
September 15, 2023 -
IAS High Energy Theory
Seminar</b></font></b></font><br>
<div><font face="Times New
Roman, Times, serif"><b><font face="Times New Roman,
Times, serif"> <br>
</font></b><font face="Times New Roman,
Times, serif">"The
Next-to-Leading Order
Scattering Waveform from
Amplitudes"</font></font><font face="Times New Roman,
Times, serif"><font face="Times New Roman,
Times, serif"><br>
<br>
Location: Bloomberg
Lecture Hall (IAS) &
Zoom<br>
<br>
Zoom Link: <a href="https://theias.zoom.us/j/84232389159?pwd=UAWukoEv3RMKL8ssHZ2nUfIwggISU7.1" rel="nofollow noopener noreferrer nofollow noopener noreferrer nofollow noopener noreferrer nofollow noopener noreferrer nofollow noopener noreferrer nofollow noopener noreferrer" target="_blank">https://theias.zoom.us/j/84232389159?pwd=UAWukoEv3RMKL8ssHZ2nUfIwggISU7.1</a><br>
<br>
Time: 11:00 AM<br>
<br>
Speaker: Aidan
Herderschee, Member,
School of Natural
Sciences, IAS</font><b><font face="Times New Roman,
Times, serif"><br>
<br>
<br>
</font>Abstract: </b>I
will showcase the
computation of the
next-to-leading order
scattering waveform in
classical gravity using
amplitude techniques. I
will first give an
overview of how to compute
generic classical
observables in gravity
using scattering amplitude
techniques in the KMOC
formalism. In particular,
I will focus on how
classical physics
systematically emerges
from quantum amplitudes
and how calculations
simplify in the classical
limit. I will then sketch
the computation of the
sub-leading contribution
to the classical waveform,
an out-of-time-order
observable which roughly
corresponds to the 1-loop
5-point amplitude. I will
conclude with a discussion
of different aspects of
the waveform, such as the
memory effect and an IR
divergent phase, along
with future directions. </font>
<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 noopener noreferrer nofollow noopener noreferrer nofollow noopener noreferrer nofollow noopener noreferrer nofollow noopener noreferrer nofollow noopener noreferrer nofollow noopener noreferrer nofollow noopener noreferrer nofollow noopener noreferrer nofollow noopener noreferrer nofollow noopener noreferrer nofollow noopener noreferrer" target="_blank">lisa@ias.edu</a></font></p>
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