Category $\mathcal{O}$ for hybrid quantum groups and non-commutative Springer resolutions
Representation Theory
2026-02-10 v4 Quantum Algebra
Abstract
The hybrid quantum group was firstly introduced by Gaitsgory, whose category can be viewed as a quantum analogue of BGG category . We give a coherent model for its principal block at roots of unity, using the non-commutative Springer resolution defined by Bezrukavnikov--Mirkovi\'{c}. In particular, the principal block is derived equivalent to the affine Hecke category. As an application, we endow the principal block with a canonical grading, and show that the graded multiplicity of simple module in Verma module is given by the generic Kazhdan--Lusztig polynomial.
Keywords
Cite
@article{arxiv.2308.07028,
title = {Category $\mathcal{O}$ for hybrid quantum groups and non-commutative Springer resolutions},
author = {Quan Situ},
journal= {arXiv preprint arXiv:2308.07028},
year = {2026}
}
Comments
52 pages, final version