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arXiv · 1207.0460

BPS States in Omega Background and Integrability

Kseniya Bulycheva·Heng-yu Chen·Alexander Gorsky·Peter Koroteev
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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.

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Kseniya Bulycheva, Heng-yu Chen, Alexander Gorsky, Peter Koroteev. 2013-04-05. BPS States in Omega Background and Integrability. https://doi.org/10.1007/jhep10(2012)116

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