A convergent expansion for random matrices

par Thomas Krajewski (CPT (Marseille))

vendredi 9 nov. 2018, 14:00 → 15:00 Europe/Paris

Fokko du Cloux (Institut Camille Jordan)

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).