Mukai implies McKay: the McKay correspondence as an equivalence of derived categories
Tom Bridgeland, Alastair King, Miles Reid
Abstract
Let G be a finite group of automorphisms of a nonsingular complex threefold M such that the canonical bundle omegaM is locally trivial as a G-sheaf. We prove that the Hilbert scheme Y=GHilb M parametrising G-clusters in M is a crepant resolution of X=M/G and that there is a derived equivalence (Fourier- Mukai transform) between coherent sheaves on Y and coherent G-sheaves on M. This identifies the K theory of Y with the equivariant K theory of M, and thus generalises the classical McKay correspondence. Some higher dimensional extensions are possible.
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