Virasoro constraint for Nekrasov instanton partition function
High Energy Physics - Theory
2012-10-29 v2 Mathematical Physics
math.MP
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.
Cite
@article{arxiv.1207.5658,
title = {Virasoro constraint for Nekrasov instanton partition function},
author = {Shoichi Kanno and Yutaka Matsuo and Hong Zhang},
journal= {arXiv preprint arXiv:1207.5658},
year = {2012}
}
Comments
23 pages, 7 figures. v2: typos corrected