Non-minimal scalar multiplets, supersymmetry breaking and dualities

TL;DR

This paper explores supersymmetry breaking in theories with non-minimal multiplets using higher derivative terms, revealing how only the Goldstino sector remains in the low energy limit and analyzing dualities and supercurrents.

Contribution

It introduces a novel approach to supersymmetry breaking with non-minimal multiplets via superspace higher derivatives, detailing the decoupling of massive sectors and the IR behavior of the Goldstino.

Findings

Massive sectors decouple leaving only Goldstino in low energy limit

Duality between non-minimal scalar multiplets and chiral multiplets is established

Chiral superfield X flows to the Goldstino superfield in IR

Abstract

We study supersymmetry breaking in theories with non-minimal multiplets (such as the complex linear or CNM multiplets), by using superspace higher derivative terms which give rise to new supersymmetry breaking vacuum solutions on top of the standard supersymmetric vacuum. We illustrate the decoupling of the additional massive sectors inside the complex linear and the CNM multiplets and show that only the Goldstino sector is left in the low energy limit. We also discuss the duality between non-minimal scalar multiplets and chiral multiplets in the presence of superspace higher derivatives. From the superspace Noether procedure we calculate the supercurrents, and we show that in the supersymmetry breaking vacuum the chiral superfield X which enters the Ferrara-Zumino supercurrent conservation equation does indeed flow in the IR to the chiral constrained Goldstino superfield. We also provide a description of the Goldstino sector in terms of the Samuel-Wess superfield for the supersymmetry breaking mechanism at hand.