Quantum GIT conjecture for Fukaya categories

Let XX be a monotone almost complex manifold with a Hamiltonian action of a group GG, moment map μ\mu, and symplectic quotient X/ ⁣/G=μ1(0)/GX/\!/G=\mu^{-1}(0)/G. Let F(X)\mathcal{F}(X) denote its Fukaya category, and let F(X)G\mathcal{F}(X)^G denote the category of GG-equivariant objects. The Lagrangian correspondence

μ1(0)X×X/ ⁣/G\mu^{-1}(0)\subset X\times X/\!/G

induces an equivalence of categories

F(X)GF(X/ ⁣/G).\mathcal{F}(X)^G\equiv\mathcal{F}(X/\!/G).

This is the Fukaya-category, or AA-model, form of the quantum GIT conjecture: quantization should commute with symplectic reduction under the stated positivity assumptions. The paper presents this as an expected equivalence in the two-dimensional setting; its general validity remains open.

Sources & referencesView supporting material

Primary source

Daniel Pomerleano and Constantin Teleman, “Quantization commutes with reduction again: the quantum GIT conjecture I”, arXiv:2405.20301 (2024).

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