Motivic Galois Theory and Feynman integrals

29 October 2019
12:00
Erik Panzer
Abstract

Feynman integrals govern the perturbative expansion in quantum field theories. As periods, these integrals generate representations of a motivic Galois group. I will explain this idea and illustrate the 'coaction principle', a mechanism that constrains which periods can appear at any loop order.