Topological sigma models with H-flux
2008 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, no 9, 057- p.Article in journal (Refereed) Published
We investigate the topological theory obtained by twisting the N = (2, 2) supersymmetric nonlinear sigma model with target a bihermitian space with torsion. For the special case in which the two complex structures commute, we show that the action is a Q-exact term plus a quasi-topological term. The quasi-topological term is locally given by a closed two-form which corresponds to a flat gerbe-connection and generalises the usual topological term of the A-model. Exponentiating it gives a Wilson surface, which can be regarded as a generalization of a Wilson line. This makes the quantum theory globally well-defined.
Place, publisher, year, edition, pages
2008. no 9, 057- p.
extended supersymmetry, topological strings, sigma models, topological, field theories
IdentifiersURN: urn:nbn:se:uu:diva-107857DOI: 10.1088/1126-6708/2008/09/057ISI: 000259699700080OAI: oai:DiVA.org:uu-107857DiVA: diva2:233342