Virasoro constraint for Nekrasov instanton partition function

Published 24 Jul 2012 in hep-th, math-ph, and math.MP | (1207.5658v2)

Abstract: We show that Nekrasov instanton partition function for SU(N) gauge theories satisfies recursion relations in the form of U(1)+Virasoro constraints when {\beta} = 1. The constraints give a direct support for AGT conjecture for general quiver gauge theories.

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