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Quantum Betti geometric Langlands functor

Representation Theory 2026-06-28 v1 Algebraic Geometry

Abstract

We construct the quantum geometric Langlands functor in the Betti setting via Whittaker coefficients. We show that the functor is compatible with the 2-Fourier-Mukai equivalence between sheaves of categories over 2-stacks GeZG\operatorname{Ge}_{Z_G} and Geπ1(Gˇ)\operatorname{Ge}_{\pi_1(\check{G})}, which classify gerbes on XX with respect to the center ZGZ_G of GG and algebraic fundamental group π1(Gˇ)\pi_1(\check{G}) of Gˇ\check{G}.

Cite

@article{arxiv.2606.29585,
  title  = {Quantum Betti geometric Langlands functor},
  author = {Ekaterina Bogdanova},
  journal= {arXiv preprint arXiv:2606.29585},
  year   = {2026}
}

Comments

30 pages; comments welcome