BRST-Fixed Points and Topological Conformal Symmetry
Toshio Nakatsu, Yuji Sugawara
Abstract
We study the twisted version of the supersymmetric G/T=SU(n)/U(1)(n-1) gauged Wess-Zumino-Witten model. By studying its fixed points under BRST transformation this model is shown to be reduced to a simple topological field theory, that is, the topological matter system in the K.Li's theory of 2 dimensional gravity for the case of n=2, and its generalization for n ≥ 3$.
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