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

S. M. Kuzenko·I. N. McArthur
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Abstract

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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S. M. Kuzenko, I. N. McArthur. 2001-01-29. Effective action of N = 4 super Yang-Mills: N = 2 superspace approach. https://doi.org/10.1016/s0370-2693(01)00407-5

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