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Past events in this series


Wed, 25 Mar 2026

11:00 - 13:00
L4

Large-N Methods and Renormalisation Group

Leonard Ferdinand
(Max Planck Institute for Mathematics in the Sciences )
Abstract

I will review how the large N expansion can be used in the context of the renormalisation group to probe some strongly coupled regimes. In particular, I will discuss a work by Gawedzki and Kupiainen where the authors study the three-dimensional non-Gaussian infrared fixed point of Phi^4 in the case of a hierarchical model of rank-one covariance, and explain how their approach could generalise to more realistic models. 

This is a joint work with Ajay Chandra.