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arXiv · hep-th/9503141

Automorphism Modular Invariants of Current Algebras

T. Gannon·P. Ruelle·M. Walton
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Abstract

We consider those two-dimensional rational conformal field theories (RCFTs) whose chiral algebras, when maximally extended, are isomorphic to the current algebra formed from some affine non-twisted Kac--Moody algebra at fixed level. In this case the partition function is specified by an automorphism of the fusion ring and corresponding symmetry of the Kac--Peterson modular matrices. We classify all such partition functions when the underlying finite-dimensional Lie algebra is simple. This gives all possible spectra for this class of RCFTs. While accomplishing this, we also find the primary fields with second smallest quantum dimension.

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T. Gannon, P. Ruelle, M. Walton. 1995-03-21. Automorphism Modular Invariants of Current Algebras. https://doi.org/10.1007/bf02103717

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