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Nonsemisimple Fusion Algebras and the Verlinde Formula

arXiv:hep-th/0306274 · doi:10.1007/s00220-004-1058-y

Abstract

We find a nonsemisimple fusion algebra F_p associated with each (1,p) Virasoro model. We present a nonsemisimple generalization of the Verlinde formula which allows us to derive F_p from modular transformations of characters.

LaTeX (amsart, xypic, times), 35pp