Fusion algebra at a rational level and cohomology of nilpotent subalgebras of ŝl2

Abstract

We define and calculate the fusion algebra of WZW model at a rational level by cohomological methods. As a byproduct we obtain a cohomological characterization of admissible representations of ŝl2.

Cite this paper

@inproceedings{Feigin1993FusionAA, title={Fusion algebra at a rational level and cohomology of nilpotent subalgebras of ŝl2}, author={Boris Feigin}, year={1993} }