Metastable supersymmetry breaking in extended supergravity

TL;DR

This paper studies the stability of non-supersymmetric critical points in extended supergravity theories, adapting methods from minimal supergravity to analyze metastability and supersymmetry breaking mechanisms.

Contribution

It extends the sGoldstino-based stability analysis from minimal to extended supergravity, addressing new features in N=4 and outlining the N=8 case.

Findings

Stability conditions for non-supersymmetric critical points in N=4 supergravity.

Analysis of supersymmetry breaking via gravity or matter sectors.

Outline of stability considerations in N=8 supergravity.

Abstract

We consider the stability of non-supersymmetric critical points of general N=4 supergravities. A powerful method to analyse this issue based on the sGoldstino direction has been developed for minimal supergravity. We adapt this to the present case, and address the conceptually new features arising for extended supersymmetry. As an application, we investigate the stability when supersymmetry breaking proceeds via either the gravity or the matter sector. Finally, we outline the N=8 case.