Nuno Romao (15/09/17)

Anders Claesson, september 11, 2017

Málstofa í stærðfræði

Fyrirlesari: Nuno Romao, IHES

Titill: Vortex moduli and the physics of gauged sigma-models

Staðsetning: Naustið, Endurmenntun
Tími: Föstudagur 15. september kl. 13:30


Vortices appear as static and stable solutions in field theories known as gauged sigma-models; these are defined on surfaces and can have both linear and nonlinear targets. I will give an overview of recent results concerning the underlying moduli spaces (parametrizing all vortex configurations up to gauge equivalence with fixed topology) and explain their physical significance. My talk will focus on the case where the target is a two-sphere with circle action; in this simple nonlinear model, many important questions can be answered at least in particular examples.