The Ginzburg–Kaledin quantized Hochschild–orbifold cohomology conjecture

Let X\mathscr{X} be a symplectic quotient orbifold and let A\mathscr{A} be an appropriate quantization of X\mathscr{X}. Ginzburg–Kaledin conjecture. There is an algebra isomorphism

H ⁣H(A[1])Horb(X)C(()).H\! H^\bullet(\mathscr{A}[\hbar^{-1}])\cong H^\bullet_\mathrm{orb}(\mathscr{X})\otimes\mathbb{C}((\hbar)).

The conjecture proposes that quantization removes the need to pass to associated graded algebras. It is presented as a related conjecture of Ginzburg and Kaledin and is unresolved in the supplied source.

Sources & referencesView supporting material

Primary source

Cris Negron, Travis Schedler, Pieter Belmans and Pavel Etingof, “The Hochschild cohomology ring of a global quotient orbifold”, arXiv:1809.08715 (2018).

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