**Date & Time:** Tuesday, January 20, 2015, 16:00-17:00.

**Venue:** Ramanujan Hall

**Title:** An overview of Ginzburg Landau theory within the framework of the Calculus of Variations

**Speaker:** Raghav Venkatraman, Indiana University

**Abstract:** In this expository talk, we give a gentle introduction to the
theory of Ginzburg Landau vortices. We will mostly be talking about
the two dimensional theory, because in this context complex variables
methods are quite useful. This development by Bethuel Brezis and
Helein paved way to the theory of weak Jacobians which proved crucial
for the problem in higher dimensions. Time permitting, we will briefly
describe this and some related time dependent problems.