Lekili–Evans comparison conjecture for Hamiltonian action maps

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Let GG act Hamiltonianly on a monotone symplectic manifold XX. The action gives an E2E_2-algebra map

C∗(ΩG)⟶Hoch⁡∗(Fukaya⁡(X)).C_*(\Omega G)\longrightarrow \operatorname{Hoch}^*(\operatorname{Fukaya}(X)).

Lekili and Evans' construction gives a map from the endomorphisms of the cotangent fiber in the wrapped Fukaya category of T∗GT^*G to the endomorphisms of the diagonal in the Fukaya category of X−×XX^-\times X; after identifying the relevant codomains, Lekili–Evans comparison conjecture. As A∞A_\infty-algebra maps, the map constructed from the Hamiltonian action is homotopic to the map constructed by Lekili and Evans. Part of the conjecture is that this equivalence is intertwined by a natural chain-level, A∞A_\infty-algebra equivalence between Hochschild cochains and endomorphisms of the diagonal. The conjecture compares a map built from bundles and localization with one built from Lagrangian correspondences and quilts. The required chain-level identification of codomains is part of the assertion, and no resolution is stated.

References

Primary source

Yong-Geun Oh and Hiro Lee Tanaka, “Continuous and coherent actions on wrapped Fukaya categories”, arXiv:1911.00349 (2024).

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