Effective action of N = 4 super Yang-Mills: N = 2 superspace approach

Details Effective action of N = 4 super Yang-Mills: N = 2 superspace approach Effective action of N = 4 super Yang-Mills: N = 2 superspace approach

2001-01-19

arxiv.org/abs/hep-th/0101127v2

Phys.Lett. B506 (2001) 140-146

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, latex, no figures, references added

Scientific paper

10.1016/S0370-2693(01)00407-5

Using the N = 2 off-shell formulation in harmonic superspace for N = 4 super Yang-Mills theory, we present a representation of the one-loop effective action which is free of so-called coinciding harmonic singularities and admits a straightforward evaluation of low-energy quantum corrections in the framework of an N = 2 superfield heat kernel technique. We illustrate our approach by computing the low-energy effective action on the Coulomb branch of SU(2) N = 4 super Yang-Mills. Our work provides the first derivation of the low-energy action of N = 4 super Yang-Mills theory directly in N = 2 superspace without any reduction to N = 1 superfields and for a generic background N = 2 Yang-Mills multiplet.

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