Non-anticommutative N=2 super-Yang-Mills theory with singlet deformation

TL;DR

This paper constructs a deformed N=2 super-Yang-Mills theory with a singlet non-anticommutative deformation that preserves full supersymmetry, R-symmetry, and Lorentz invariance, leading to a novel geometric structure.

Contribution

It introduces a unique singlet deformation of N=2 superspace that maintains all symmetries and results in a new form of special geometry with a specific antiholomorphic prepotential.

Findings

Preserves full N=2 supersymmetry, SU(2) R symmetry, and Lorentz invariance.

Defines a new antiholomorphic prepotential for the deformed theory.

Establishes a connection to heterotic special geometry.

Abstract

We consider a non-anticommutative N=2 superspace with an SU(2) singlet and Lorentz scalar deformation parameter, $\{\theta^{\alpha i},\theta^{\beta j}\}_\star = -2iP \e^{\alpha\beta}\e^{ij}$. We exploit this unique feature of the N=2 case to construct a deformation of the non-Abelian super-Yang-Mills theory which preserves the full N=2 supersymmetry together with the SU(2) R symmetry and Lorentz invariance. The resulting action describes a kind of "heterotic special geometry" with antiholomorphic prepotential $\bar f(\bar\phi) = Tr (\bar\phi^2 (1+P\bar\phi)^{-2})$.