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arXiv · 1901.09630

Surface operators in N=2 SQCD and Seiberg Duality

Sujay K. Ashok·Sourav Ballav·Marialuisa Frau·Renjan Rajan John
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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.

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Sujay K. Ashok, Sourav Ballav, Marialuisa Frau, Renjan Rajan John. 2019-01-28. Surface operators in N=2 SQCD and Seiberg Duality. https://doi.org/10.1140/epjc%2Fs10052-019-6866-5

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