Central Charge as the Origin of Holomorphic Effective Action in N=2 Gauge Theory

Abstract

We explicitly demonstrate that the perturbative holomorphic contribution to the off-shell effective action of N=2 U(1) gauge supermultiplet is an entire effect of the minimal coupling to a hypermultiplet with the mass generated by a central charge in N=2 superalgebra. The central charge is induced by a constant vacuum N=2 gauge superfield strength spontaneously breaking the automorphism U(1)_R symmetry of N=2 superalgebra. We use the manifestly off-shell supersymmetric harmonic superspace techniques of quantum calculations with the central charge-massive hypermultiplet propagator.

13 pages, latex, no figures, minor corrections

References in corpus (3)

• The Background Field Method for N = 2 Super Yang-Mills Theories in Harmonic Superspace
• Induced hypermultiplet self-interactions in N=2 gauge theories
• The Higgs Mechanism in N=2 Superspace

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