Extended Baxter relations and QQ-systems for quantum affine algebras
Abstract
Generalized Baxter's TQ-relations and the QQ-system are systems of algebraic relations in the category O of representations of the Borel subalgebra of the quantum affine algebra U_q(g^), which we established in our earlier works arXiv:1308.3444 and arXiv:1606.05301. In the present paper, we conjecture a family of analogous relations labeled by elements of the Weyl group W of g, so that the original relations correspond to the identity element. These relations are closely connected to the W-symmetry of q-characters established in arXiv:2211.09779. We prove these relations for all w in W if g has rank two, and we prove the extended TQ-relations if w is a simple reflection. We also generalize our results and conjectures to the shifted quantum affine algebras.
Cite
@article{arxiv.2312.13256,
title = {Extended Baxter relations and QQ-systems for quantum affine algebras},
author = {Edward Frenkel and David Hernandez},
journal= {arXiv preprint arXiv:2312.13256},
year = {2024}
}
Comments
42 pages, v3: more details added, accepted for publication in Communications in Math. Phys