Semi-infinite cohomology in conformal field theory and 2d gravity
Abstract
We discuss various techniques for computing the semi-infinite cohomology of highest weight modules which arise in the BRST quantization of two dimensional field theories. In particular, we concentrate on two such theories -- the G/H coset models and 2d gravity coupled to c≤ 1 conformal matter. (to appear in the proceedings of the XXV Karpacz Winter School)
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