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Field Identification in Non-Unitary Diagonal Cosets

Pierre Mathieu·David Senechal·Mark Walton
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Abstract

We study the nonunitary diagonal cosets constructed from admissible representations of Kac-Moody algebras at fractional level, with an emphasis on the question of field identification. Generic classes of field identifications are obtained from the analysis of the modular S matrix. These include the usual class related to outer automorphisms, as well as some intrinsically nonunitary field identifications. They allow for a simple choice of coset field representatives where all field components of the coset are associated with integrable finite weights.

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Pierre Mathieu, David Senechal, Mark Walton. 1991-10-01. Field Identification in Non-Unitary Diagonal Cosets. https://doi.org/10.1142/s0217751x92004002

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