Universal Superfield Action for $N=8 \to N=4$ Partial Breaking of Global Supersymmetry in D=1

TL;DR

This paper constructs a universal N=4 supersymmetric action describing partial breaking of N=8 supersymmetry in one dimension, providing explicit models and demonstrating their interrelations via duality transformations.

Contribution

It introduces a universal off-shell action for N=4 supermultiplets arising from partial N=8 to N=4 supersymmetry breaking in D=1, with explicit constructions and duality relations.

Findings

Universal N=4 superfield action constructed.

Explicit models for different Goldstone supermultiplets.

Actions related through off-shell duality transformations.

Abstract

We explicitly construct N=4 worldline supersymmetric minimal off-shell actions for five options of 1/2 partial spontaneous breaking of $N=8, d=1$ Poincar\'e supersymmetry. We demonstrate that the action for the N=4 Goldstone supermultiplet with four fermions and four auxiliary components is a universal one. The remaining actions for the Goldstone supermultiplets with physical bosons are obtained from the universal one by off-shell duality transformations.