Nonperturbative Mellin Amplitudes: Existence, Properties, Applications

Name: Nonperturbative Mellin Amplitudes: Existence, Properties, Applications
Start: 2020-04-16T15:00:00+02:00
End: 2020-04-16T16:00:00+02:00
Location: Online

by João Penedones (EPFL)

Thursday 16 Apr 2020, 15:00 → 16:00 Europe/Berlin

Online

Description

I will argue that nonperturbative CFT correlation functions admit a Mellin amplitude representation. I will discuss the main properties of Mellin amplitudes: subtractions, analyticity, unitarity, Polyakov conditions and polynomial boundedness at infinity. These can be used to write dispersion relations for Mellin amplitudes. Combining crossing, dispersion relations and Polyakov conditions I will write down a set of (extremal) functionals that act on the OPE data.

https://zoom.us/j/99321745504?pwd=NHFuWkRxL0trcGZxQTNrUHQxNFpZQT09