SU(2)xU(1) non-anticommutative N=2 supersymmetric gauge theory

TL;DR

This paper derives the component action and scalar potential for a non-anticommutative N=2 supersymmetric gauge theory with gauge group U(2), introducing a Lorentz-invariant deformation that preserves fundamental symmetries.

Contribution

It provides the first derivation of the master function and scalar potential for NAC-deformed N=2 gauge theories with non-simple gauge groups, and proposes non-abelian BPS equations.

Findings

Derived the master function for the NAC-deformed theory.

Calculated the scalar potential in the deformed theory.

Proposed non-abelian BPS-type equations for the NAC-deformed SU(2) gauge theory.

Abstract

We derive the master function governing the component action of the four-dimensional non-anticommutative (NAC) and fully N=2 supersymmetric gauge field theory with a non-simple gauge group U(2)=SU(2)xU(1). We use a Lorentz singlet NAC-deformation parameter and an N=2 supersymmetric star (Moyal) product which do not break any of the fundamental symmetries of the undeformed N=2 gauge theory. The scalar potential in the NAC-deformed theory is calculated. We also propose the non-abelian BPS-type equations in the case of the NAC-deformed N=2 gauge theory with the SU(2) gauge group, and comment on the SU(3) case too. The NAC-deformed field theories can be thought of as the effective (non-perturbative) N=2 gauge field theories in a certain (scalar only) N=2 supergravity background.