Hidden $SL_2(\mathbb{Z})$-symmetry in $BC_l^{(2)}$
Representation Theory
2025-02-06 v1 Mathematical Physics
math.MP
Abstract
A well-known -action on the characters of integrable highest weight modules over the affine Lie algebra of type at a positive level is extended to an -action at a positive even level by supplementing their twisted characters.
Keywords
Cite
@article{arxiv.2502.03316,
title = {Hidden $SL_2(\mathbb{Z})$-symmetry in $BC_l^{(2)}$},
author = {K. Iohara and Y. Saito},
journal= {arXiv preprint arXiv:2502.03316},
year = {2025}
}