Seminar
Speaker
Kevin Costello (Perimeter Institute for Theoretical Physics)
Date & Time
Wed, 27 April 2022, 18:30 to 20:00
Venue
Online Seminar
Abstract

The celestial holography program suggests that collinear singularities in gauge theory and gravity can form the OPE coefficients of a two-dimensional CFT. We investigate whether known one-loop corrections to QCD collinear singularities satisfy the associativity conditions of an OPE. We find they do not, but that associativity can be restored for certain gauge groups by a certain Green-Schwarz mechanism. This is joint work with Natalie Paquette.

ICTS Math-Phys seminar is a virtual seminar at the intersection of mathematics (geometry, algebra, representation theory, higher categories, TQFT, ...) and theoretical physics (QFT, string theory, condensed matter, ...). The purpose of this series is to bring together mathematicians and physicists around topics of common interest and foster interdisciplinary discussions.

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