Speaker: Federico Zerbini
Date: 10:30 16/04/2021
Title:  The periods of string theory amplitudes
Abstract: Scattering amplitudes predict the probability of interaction of elementary particles. 
In the perturbative approach, they are computed through special period integrals, called Feynman integrals. 
In this talk, I will explain which kind of periods are known or expected to arise from string theory scattering 
amplitudes. To do so, I will briefly discuss the notion of period of a fundamental group, and the notion of 
single-valued period.