BPS states in omega background and integrability
Journal
Journal of High Energy Physics
Journal Volume
2012
Journal Issue
10
Date Issued
2012
Author(s)
Abstract
We reconsider string and domain wall central charges in N = 2 supersymmetric gauge theories in four dimensions in presence of the Omega background in the Nekrasov-Shatashvili (NS) limit. Existence of these charges entails presence of the corresponding topological defects in the theory - vortices and domain walls. In spirit of the 4d/2d duality we discuss the worldsheet low energy effective theory living on the BPS vortex in N = 2 Supersymmetric Quantum Chromodynamics (SQCD). We discuss some aspects of the brane realization of the dualities between various quantum integrable models. A chain of such dualities enables us to check the AGT correspondence in the NS limit. © 2012 SISSA.
Type
journal article