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SUMMARY:Alfredo Guevara (Harvard)
DTSTART:20210409T174500Z
DTEND:20210409T184500Z
DTSTAMP:20260423T010250Z
UID:PUHET/17
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/PUHET/17/">N
 ew holomorphic features of celestial correlation functions</a>\nby Alfredo
  Guevara (Harvard) as part of Princeton HET seminar\n\n\nAbstract\nThe tal
 k will be split in two parts. In part I we present a new infinite dimensio
 nal symmetry algebra underlying scattering of gluons and gravitons. It ext
 ends the leading and subleading generators by an infinite tower of soft mo
 des located at negative integer weights. We derive the corresponding OPEs 
 and show how this is the minimal consistent extension of previous results.
  Based on hep-th/2103.03961.\n\nIn part II we will analyze celestial holog
 raphy in the context of 3D models such as large-N O(N) and Chern-Simons ma
 tter theory. In these models a non-perturbative computation can be carried
  out leading to novel features in the celestial 4-point function\, includi
 ng crossing-symmetry relations and the conformal partial wave expansion\, 
 extending previous work of Lam and Shao. Work in progress with J. Kulp\, J
 . Wu (Perimeter) and Garcia-Sepulveda (Chicago).\n
LOCATION:https://researchseminars.org/talk/PUHET/17/
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