Speaker
Costis Papageorgakis
(Queen Mary University London, UK)
Description
I will introduce conformal field theories and the constraints imposed by conformal symmetry on correlation functions. After discussing primary operators, the operator product expansion, and conformal blocks, I will present the crossing equation for four-point functions. I will explain how unitarity - which guarantees positivity of OPE coefficients squared - enables the linear functional method to extract rigorous, non-perturbative bounds on CFT data.
