Sep 9 – 13, 2019
Europe/Zurich timezone

## Diagrammatic Coaction of Two-Loop Feynman Integrals

Sep 11, 2019, 9:30 AM
25m
Chambre du Trésorier

### Speaker

James Matthew (University of Edinburgh)

### Description

It is known that one-loop Feynman integrals possess an algebraic structure encoding their analytic properties called the coaction, which can be written in terms of Feynman integrals and their cuts. This diagrammatic coaction, and the coaction on other classes of integrals such as hypergeometric functions, may be expressed using suitable bases of differential forms and integration contours. This provides a useful framework for computing coactions of Feynman integrals expressed using the hypergeometric functions. We will discuss recent developments in the calculation of two-loop diagrammatic coactions using this technique.

### Primary author

James Matthew (University of Edinburgh)