The Refined Topological Vertex
High Energy Physics - Theory
2009-11-05 v2
Abstract
We define a refined topological vertex which depends in addition on a parameter, which physically corresponds to extending the self-dual graviphoton field strength to a more general configuration. Using this refined topological vertex we compute, using geometric engineering, a two-parameter (equivariant) instanton expansion of gauge theories which reproduce the results of Nekrasov. The refined vertex is also expected to be related to Khovanov knot invariants.
Cite
@article{arxiv.hep-th/0701156,
title = {The Refined Topological Vertex},
author = {Amer Iqbal and Can Kozcaz and Cumrun Vafa},
journal= {arXiv preprint arXiv:hep-th/0701156},
year = {2009}
}
Comments
70 Pages, 23 Figures