Séminaire Physique mathématique ICJ

A convergent expansion for random matrices

by Thomas Krajewski (CPT (Marseille))

Fokko du Cloux (Institut Camille Jordan)

Fokko du Cloux

Institut Camille Jordan

Université Lyon 1, Bât. Braconnier, 21 av. Claude Bernard, 69100 Villeurbanne

The usual Feynman graph expansions in physics lead to divergent powers series which are only asymptotic. This is due to the fact that there are too many graphs at a given order. We propose to resolve this issue by expanding over trees only. This is based on https://arxiv.org/abs/1712.05670 (joint work with V. Rivasseau and V. Sazonov).

Organized by

Fabien Vignes-Tourneret