The sunrise and the cosmic Galois group

by Matija Tapuskovic (Oxford)

Tuesday 28 Mar 2023, 14:30 → 15:30 Europe/Copenhagen

Aud M

Abstract: We will discuss the motivic Galois coaction on the motivic lift of the sunrise Feynman integral in d=2 for generic values of masses and momenta. We will show that its Galois conjugates can be expressed in terms of motivic lifts of Feynman integrals associated to related Feynman graphs, and say a few words about the associated 'de Rham periods'.