The quantum Betti global geometric Langlands conjecture

Let GG be a reductive group, let Gˇ\check{G} be its Langlands dual group, and let Shvc,Nilp(BunG)\operatorname{Shv}_{c,\operatorname{Nilp}}(\operatorname{Bun}_G) denote the category of cc-twisted sheaves on BunG\operatorname{Bun}_G with nilpotent singular support. Let XRepq(Gˇ)\int_X\operatorname{Rep}_q(\check{G}) denote the corresponding factorization or topological field-theoretic category over XX. The quantum Betti global geometric Langlands conjecture. There exists a canonical equivalence of derived categories

Shvc,Nilp(BunG)LcBettiXRepq(Gˇ).\operatorname{Shv}_{c,\operatorname{Nilp}}(\operatorname{Bun}_G)\xrightarrow[\cong]{\mathbb L_c^{\operatorname{Betti}}}\int_X\operatorname{Rep}_q(\check{G}).

This is the Betti analogue of the quantum global geometric Langlands correspondence and is motivated by the Betti Langlands correspondence and topological field theory; its general validity remains open.

Sources & referencesView supporting material

Primary source

Ekaterina Bogdanova, “Quantum Betti geometric Langlands functor”, arXiv:2606.29585 (2026).

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