AbstractsPhysics

Equivariant Cohomology and Localisation

by Jaume Alonso i Fernández




Institution: Uppsala University
Department:
Year: 2015
Keywords: Equivariant Cohomology; localisation; Natural Sciences; Physical Sciences; Naturvetenskap; Fysik; Masterprogram i fysik; Master Programme in Physics
Record ID: 1373303
Full text PDF: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-251286


Abstract

Equivariant localisation is based on exploiting certain symmetries of some systems, generally represented by a non-free action of a Lie group on a manifold, to reduce the dimensionality of integral calculations that commonly appear in theoretical physics. In this work we present Cartan's model of equivariant cohomology in different scenarios, such as differential manifolds, symplectic manifolds or vector bundles and we reproduce the main corresponding localisation results.