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<div class="WordSection1"><span
style="font-family: Times New Roman,
Times, serif;">The Institute for
Advanced Study requires that all adult
visitors, collaborators, conference and
on-campus seminar attendees and outside
vendors coming to the Institute are
required to have completed a COVID-19
vaccination and booster in order to
enter the IAS campus. Individuals must
be prepared to present proof of
vaccination if asked and are expected to
follow the Institute's Covid-19
Procedures. Masks are optional while
indoors.<br>
<br>
Additional information can be found at:<br>
</span><span style="font-family: Times New
Roman, Times, serif;"><a
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<span style="font-family: Times New Roman,
Times, serif;"> <span style="font-size:
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style="font-family: 'times new roman' ,
serif;" data-mce-style="font-family:
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</span></span></span>
<p class="MsoDate" style="margin: 0px;"
data-mce-style="margin: 0px;"><span
style="font-family: Times New Roman,
Times, serif;"><span style="font-size:
12pt;" data-mce-style="font-size:
12pt;"><strong><b><span
style="font-family: 'roman'
'times';"
data-mce-style="font-family:
'roman' 'times';">Tuesday,
March 21, 2023 - IAS
Amplitudes Group Meeting<br>
<br>
</span></b></strong><span
style="font-family: 'roman'
'times';"
data-mce-style="font-family:
'roman' 'times';">"Physics of the
Analytic S-Matrix - Lecture 2"</span><span
style="font-family: 'roman'
'times';"
data-mce-style="font-family:
'roman' 'times';"><br>
<br>
<!--StartFragment--></span></span></span></p>
<p style="margin:0px"
data-mce-style="margin: 0px;"><span
style="font-family: Times New Roman,
Times, serif;"><span style="font-size:
12pt;" data-mce-style="font-size:
12pt;"><span style="font-family:
'roman' 'times';"
data-mce-style="font-family:
'roman' 'times';">Location:
Bloomberg Lecture Hall (IAS) &
Zoom</span></span></span></p>
<p style="margin:0px"
data-mce-style="margin: 0px;"><span
style="font-family: Times New Roman,
Times, serif;"><span style="font-size:
12pt;" data-mce-style="font-size:
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data-mce-style="font-family:
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</span></span></span></p>
<p style="margin:0px"
data-mce-style="margin: 0px;"><span
style="font-family: Times New Roman,
Times, serif;"><span style="font-size:
12pt;" data-mce-style="font-size:
12pt;"><span style="font-family:
'roman' 'times';"
data-mce-style="font-family:
'roman' 'times';">Zoom Link: <a
href="https://theias.zoom.us/j/85881439454?pwd=L1g4ZXc3UG1iM0w0MDAwN1VsRnRWdz09"
rel="nofollow noopener
noreferrer" target="_blank"
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class="moz-txt-link-freetext">https://theias.zoom.us/j/85881439454?pwd=L1g4ZXc3UG1iM0w0MDAwN1VsRnRWdz09</a></span></span></span></p>
<p class="MsoDate" style="margin: 0px;"
data-mce-style="margin: 0px;"><span
style="font-family: Times New Roman,
Times, serif;"><span style="font-size:
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<br>
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<p class="MsoDate" style="margin: 0px;"
data-mce-style="margin: 0px;"><span
style="font-size: 12pt; font-family:
"Times New Roman", Times,
serif;">Time: 2:00 PM</span><br>
</p>
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data-mce-style="margin: 0px;"><span
style="font-family: Times New Roman,
Times, serif;"><span style="font-size:
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data-mce-style="font-family:
'roman' 'times';"><br>
Speaker: Sebastian Mizera, Member,
School of Natural Sciences, IAS</span></span></span><span
style="font-family: Times New Roman,
Times, serif;"><span style="font-size:
12pt;" data-mce-style="font-size:
12pt;"><span style="font-family:
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data-mce-style="font-family:
'roman' 'times';"></span></span></span></p>
<span style="font-family: 'times new
roman' , serif;"
data-mce-style="font-family: 'times new
roman' , serif;"><span style="font-size:
12pt;" data-mce-style="font-size:
12pt;"><span style="font-family: Times
New Roman, Times, serif;"> <br>
<b>Abstract: </b>You might've heard
about various mathematical
properties of scattering amplitudes
such as analyticity, sheets, branch
cuts, discontinuities, etc. What
does it all mean? In these lectures,
we'll take a guided tour through
simple scattering problems that will
allow us to directly trace such
properties back to physics. We'll
learn how different analytic
features of the S-matrix are really
consequences of causality, locality
of interactions, unitary
propagation, and so on.<br>
<br>
This talk is a part of a series of
lectures aimed at graduate students.
The second one will focus on aspects
of quantum-mechanical scattering, as
well as the relation between
locality and analyticity.<br>
<br>
</span></span></span><span
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serif;" data-mce-style="font-family:
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style="font-family: Times New Roman,
Times, serif;"> </span> </span></span>
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Roman, Times, serif;">To view the calendar
online, go to:</span> <span style="color:
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font-size: 12pt;" data-mce-style="color:
#000000; font-family: 'times new roman' ,
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href="https://www.ias.edu/sns/events/physics"
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12pt;" width="100%" size="2"><span
style="font-family: Times New Roman,
Times, serif;"><span style="font-size:
12pt;" data-mce-style="font-size: 12pt;">---------------------<br>
</span><span style="font-size: 12pt;"
data-mce-style="font-size: 12pt;">Lisa
Fleischer<br>
</span><span style="font-size: 12pt;"
data-mce-style="font-size: 12pt;">School
of Natural Sciences<br>
</span><span style="font-size: 12pt;"
data-mce-style="font-size: 12pt;">Institute
for Advanced Study<br>
</span><span style="font-size: 12pt;"
data-mce-style="font-size: 12pt;">1
Einstein Drive<br>
</span><span style="font-size: 12pt;"
data-mce-style="font-size: 12pt;">Princeton,
NJ 08540<br>
</span><span style="font-size: 12pt;"
data-mce-style="font-size: 12pt;"></span><a
href="mailto:lisa@ias.edu" rel="nofollow
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