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PIRSA:16020087

Video URL

https://pirsa.org/16020087

Causality Constraints in Conformal Field Theory

(2016). Causality Constraints in Conformal Field Theory. Perimeter Institute for Theoretical Physics. https://pirsa.org/16020087

Talk numberPIRSA:16020087
DOI10.48660/16020087
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

In effective field theory, causality fixes the signs of certain interactions.  I will describe how these Lorentzian constraints are encoded in the Euclidean theory, and use the conformal bootstrap to derive analogous causality constraints in CFT. Applied to spinning fields, these constraints include (some of) the Hofman-Maldacena bounds derived from conformal collider physics. I will also discuss applications to holographic theories.