Surface operators in N=2 SQCD and Seiberg Duality

Abstract

We study half-BPS surface operators in N=2supersymmetric asymptotically conformal gauge theories in four dimensions with SU(N) gauge group and 2N fundamental flavours using localization methods and coupled 2d/4d quiver gauge theories. We show that contours specified by a particular Jeffrey-Kirwan residue prescription in the localization analysis map to particular realizations of the surface operator as flavour defects. Seiberg duality of the 2d/4d quivers is mapped to contour deformations of the localization integral which in this case involves a residue at infinity. This is reflected as a modified Seiberg duality rule that shifts the Lagrangian of the purported dual theory by non-perturbative terms. The new rules, that depend on the 4d gauge coupling, lead to a match between the low energy effective twisted chiral superpotentials for any pair of dual 2d/4d quivers.

arXiv comment32 pages

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Cited by in corpus (6)

• Central Charges of 2d Superconformal Defects
• Taming Defects in $\mathcal{N}=4$ Super-Yang-Mills
• Surface Defects from Fractional Branes -- I
• Spectra of elliptic potentials and supersymmetric gauge theories
• Effective Gravitational Couplings of Kaluza-Klein Gauge Theories
• Modular properties of surface operators in N=2 SQCD