Workshop
Coaction on Feynman diagrams, Feynman integrals, and hypergeometric functions
- Ruth Britto (Trinity College Dublin)
Abstract
I present combinatorial operations on Feynman diagrams, described by cutting and pinching edges, that correspond to the algebraic coaction on the functions resulting from their integration. These operations correspond in turn to a coaction on generalized hypergeometric functions. I will comment on some implications for physical theories.
