Rank reduction in orthosymplectic types
Kyungtak Hong, Alexander Tsymbaliuk
Abstract
This note establishes a rank reduction for RLL-realization of quantum affine supergroups of orthosymplectic type. In the rational limit, this provides a more conceptual proof of the analogous result for orthosymplectic superYangians from arXiv:2311.18818. We also determine the exact scalar prefactor appearing in the evaluation of the universal R-matrix, refining the main result of arXiv:2408.16720.
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