The quantum McKay correspondence for symplectic resolutions

Let MM be an algebraic symplectic manifold with a symplectic action of a finite group GG, and let XM/GX\to M/G be a smooth symplectic resolution. Choose deformation-quantizations QuantM\mathsf{Quant}_M and QuantX\mathsf{Quant}_X of the structure sheaves, and write QuantM[1/ε]\mathsf{Quant}_M[1/\varepsilon] and QuantX[1/ε]\mathsf{Quant}_X[1/\varepsilon] for their localizations. Let the cross-product algebra QuantM[1/ε]#G\mathsf{Quant}_M[1/\varepsilon]\#G act on the category of coherent equivariant modules. The quantum McKay correspondence. For appropriate choices of deformation-quantizations, there is a category equivalence

QuantX[1/ε]-mod(QuantM[1/ε]#G)-mod.\mathsf{Quant}_X[1/\varepsilon]\operatorname{-mod}\simeq (\mathsf{Quant}_M[1/\varepsilon]\#G)\operatorname{-mod}.

The source presents this as a quantum analogue of the Bridgeland–King–Reid theorem; no proof or resolution status is supplied.

Sources & referencesView supporting material

Primary source

Victor Ginzburg and Dmitry Kaledin, “Poisson deformations of symplectic quotient singularities”, arXiv:math/0212279 (2010).

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