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Cohomological reduction of sigma models

This article studies some features of quantum field theories with internal supersymmetry, focusing mainly on 2-dimensional non-linear sigma models which take values in a coset superspace. It is discussed how BRST operators from the target space supersymmetry algebra can be used to identify subsector...

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Bibliographic Details
Published in:The journal of high energy physics 2010-05, Vol.2010 (5), Article 47
Main Authors: Candu, Constantin, Creutzig, Thomas, Mitev, Vladimir, Schomerus, Volker
Format: Article
Language:English
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Summary:This article studies some features of quantum field theories with internal supersymmetry, focusing mainly on 2-dimensional non-linear sigma models which take values in a coset superspace. It is discussed how BRST operators from the target space supersymmetry algebra can be used to identify subsectors which are often simpler than the original model and may allow for an explicit computation of correlation functions. After an extensive discussion of the general reduction scheme, we present a number of interesting examples, including symmetric superspaces and coset superspaces of the form .
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP05(2010)047