Speaker
Dr
Nuno Romao
(Universität Augsburg)
Description
Gauged nonlinear sigma-models on Riemannian surfaces are self-dual field theories which admit supersymmetric extensions. In contrast with the more familiar gauged *linear* sigma-models, their classical vacua accommodate several types of BPS solitonic particles, described by vortex moduli spaces (supporting Kähler metrics) to which path integrals localise. This leads to some intricate phenomena -- in particular, the moduli spaces typically acquire a boundary corresponding to coalescence of particles of distinct types. In my talk, I will discuss geometric aspects of vortex moduli that relate to the presence of such a boundary, focusing on the simplest model of this sort.
(This is joint work with Martin Speight.)
Primary author
Dr
Nuno Romao
(Universität Augsburg)
