Gaitsgory–Lurie quantum fundamental local equivalence conjecture

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Let GG be a reductive group, let Gˇ\check{G} be its Langlands dual group, let κ\kappa be a level, and let FLE⁡\operatorname{FLE} be the canonical functor

FLE⁡:Shv⁡κ,ARan⁡(Gr⁡G,ρ(ωX))LN,χ⟶Γ\lax(Ran⁡,Rep⁡q(Gˇ)).\operatorname{FLE}:\operatorname{Shv}_{\kappa,A_{\operatorname{Ran}}}(\operatorname{Gr}_{G,\rho(\omega_X)})^{LN,\chi}\longrightarrow\Gamma^{\lax}(\operatorname{Ran},\operatorname{Rep}_q(\check{G})).

Gaitsgory–Lurie quantum fundamental local equivalence conjecture. The functor FLE⁡\operatorname{FLE} is an equivalence.

This is presented as a stronger expected result needed for the construction of the quantum Langlands functor, extending the known construction of the corresponding functor by Gaitsgory and Hayash. Its status remains open.

References

Primary source

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

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