Particle Theory Seminar - Riccardo Rattazzi - “The semiclassical description of CFT in the large charge regime”

I will give an overview of the progress made in recent years in the study of CFT data for large charge operators using the semiclassical approximation. The basic result is that, in this regime, the data are universally codified by the dynamics of a superfluid phase for the theory compactified on the cylinder.
The results have so far mostly concerned the euclidean correlators, but I will describe the first steps towards the extension of this methodology to the lorentzian correlators, flux correlators in particular.