Abstract
We initiate a program to study certain recent problems in non-compact coset CFT by the BRST approach. We derive a reduction formula for the BRST cohomology by making use of a twisting by highest weight modules. As illustrations, we apply the formula to the bosonic string model and a rank one non-compact coset model [DPL]. Our formula provides a completely new approach to non-compact coset construction.
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Communicated by A. Jaffe
Partially supported by NSF Grant DMS-8703581
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Lian, B.H., Zuckerman, G.J. BRST cohomology and highest weight vectors. I. Commun.Math. Phys. 135, 547–580 (1991). https://doi.org/10.1007/BF02104121
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DOI: https://doi.org/10.1007/BF02104121