FIELD IDENTIFICATION IN NONUNITARY DIAGONAL COSETS
FIELD IDENTIFICATION IN NONUNITARY DIAGONAL COSETS
We study the nonunitary diagonal cosets constructed from admissible representations of Kač-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 …