Hochschild homology conjecture for quantizations of symplectic resolutions

Let XX be an irreducible affine Poisson variety admitting a symplectic resolution X~X\widetilde{X}\to X. Let AA_\hbar be a deformation quantization of OX\mathcal{O}_X, and let gr\operatorname{gr} denote the associated graded object. Hochschild homology conjecture. (i) For every deformation quantization AA_\hbar of OX\mathcal{O}_X, the canonical surjection is an isomorphism

HP0(OX)(())grHH0(A[1]).\mathsf{HP}_0(\mathcal{O}_X)((\hbar))\xrightarrow{\sim}\operatorname{gr}\mathsf{HH}_0(A_\hbar[\hbar^{-1}]).

(ii) There is a countable collection of \hbar-homogeneous hypersurfaces in H2(X~)[[]]\hbar H^2(\widetilde{X})[[\hbar]] such that, for AA_\hbar obtained as the global sections of a quantization in the family H2(X~)[[]]\hbar H^2(\widetilde{X})[[\hbar]] outside this collection, there is an abstract isomorphism

HPDR(X)(())grHH(A[1]).\mathsf{HP}^{DR}_\bullet(X)((\hbar))\cong\operatorname{gr}\mathsf{HH}_\bullet(A_\hbar[\hbar^{-1}]).

The conjecture seeks to relate Poisson and Hochschild homology for quantizations of varieties with symplectic resolutions; its proposed generic statement is motivated by the symmetric-power case, while the general relationship remains open.

Sources & referencesView supporting material

Primary source

P. Etingof and T. Schedler, “Poisson traces for symmetric powers of symplectic varieties”, arXiv:1109.4712 (2011).

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