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arXiv · hep-th/9204077

Signature Characters for A_2 and B_2

A. Kent·G. Watts
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Abstract

The signatures of the inner product matrices on a Lie algebra's highest weight representation are encoded in the representation's signature character. We show that the signature characters of a finite-dimensional Lie algebra's highest weight representations obey simple difference equations that have a unique solution once appropriate boundary conditions are imposed. We use these results to derive the signature characters of all $A_2$ and $B_2$ highest weight representations. Our results extend, and explain, signature patterns analogous to those observed by Friedan, Qiu and Shenker in the Virasoro algebra's representation theory.

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A. Kent, G. Watts. 1992-04-23. Signature Characters for A_2 and B_2. https://doi.org/10.1007/bf02100282

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