Harish-Chandra homomorphisms and symplectic reflection algebras for wreath-products
Pavel Etingof, Wee Liang Gan, Victor Ginzburg, Alexei Oblomkov
Abstract
The main result of the paper is a natural construction of the spherical subalgebra in a symplectic reflection algebra associated with a wreath-product in terms of quantum hamiltonian reduction of an algebra of differential operators on a representation space of an extended Dynkin quiver. The existence of such a construction has been conjectured in [EG]. We also present a new approach to reflection functors and shift functors for generalized preprojective algebras and symplectic reflection algebras associated with wreath-products.
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