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Higher-Derivative Terms in N=2 SUSY Effective Actions

Philip C. Argyres, Adel M. Awad, Gregory A. Braun, F. Paul Esposito

hep-tharXiv:hep-th/0402203

Abstract

Harmonic superspace can be used to construct higher derivative terms in N=2 supersymmetric effective actions despite the infinite redundancy in their description due to the infinite number of auxiliary fields. We are able to write down all of the 3- and 4-derivative terms on the Higgs, Coulomb, and mixed branches, modulo the possible existence of superspace Chern-Simons-like terms, which we discuss. Many of the terms we find are holomorphic, and at least one is shown to not receive quantum corrections.

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