Jan Philip Solovej (University of Copenhagen):

Title: Microscopic derivation of the Ginzburg-Landau model

I will discuss how the Ginzburg-Landau model of superconductivity arises as an asymptotic limit of the microscopic Bardeen-Cooper-Schrieffer (BCS) model. The asymptotic limit may be seen as a semiclassical limit and one of the main difficulties is to derive a semiclassical expansion with minimal regularity assumptions.