“A variational approach to topological singularities: from Ginzburg-Landau to the XY model”
Martedì 12 Maggio 2026, ore 17:00 - Aula 2AB45 - Giovanni Savaré (Technische Universität München)
Abstract
In this seminar we explore variational approaches to topological singularities in two dimensions, centered on the Ginzburg-Landau functional. We will detail the ‘core radius approach’ as a framework for analyzing these singularities. In the final part of the talk, we will introduce the classical XY model on lattices to discuss how this discrete spin system captures analogous topological phenomena and relates to the underlying continuous theory.
