HET-seminar: Ben Hoare

Speaker: Ben Hoare

Title: Integrable 2d sigma models and renormalisation group flow

Abstract: Many classically integrable σ-models are known to be solutions of the 1-loop renormalisation group equations, or "Ricci flow." In this talk we will investigate what happens at higher loops and explore the quantum corrections required to preserve renormalisability. Applying this analysis to deformations of the well-known principal chiral model, we will argue that non-abelian duality commutes with renormalisation group flow.