States in the BRST cohomology for G/H WZNW models
Stephen Hwang, Henric Rhedin
Abstract
WZNW models, especially gauged WZNW models, are important in the study of conformal field theories. Karabali and Schnitzer initiated the study of the BRST cohomology of a WZNW model gauged by an anomaly free vector sub-group and results were given for abelian sub-groups. This result was generalized to non-abelian sub-groups for a specific set of representations HR1. The subject of this talk is the analysis of arbitrary representations HR2,Hw.
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