A geometric recipe for twisted superpotentials

Abstract

We give a pedagogical introduction to spectral networks and abelianization, as well as their relevance to $\mathcal{N}=2$ supersymmetric field theories in four dimensions. Motivated by a conjecture of Nekrasov-Rosly-Shatashvili, we detail a geometric recipe for computing the effective twisted superpotential for $\mathcal{N}=2$ field theories of class $\mathcal{S}$ as a generating function of the brane of opers, with respect to the spectral coordinates found from abelianization. We present two new examples, the simplest Argyres-Douglas theory and the pure $SU(2)$ gauge theory, while we conjecture the $\epsilon$-expansion of the effective twisted superpotential for the $E_6$ Minahan-Nemeschansky theory.

arXiv comment102 pages, 42 figures; v2: references added

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Cited by in corpus (3)

• Exponential Networks, WKB and Topological String
• A-branes, foliations and localization
• Les Houches lectures on non-perturbative Seiberg-Witten geometry