Scale invariant Volkov-Akulov Supergravity

TL;DR

This paper develops a scale-invariant supergravity model featuring a Goldstino, a massless scalaron, and a massive axion, providing a novel duality between higher-curvature supergravity and a nilpotent chiral scalar curvature framework.

Contribution

It introduces a new scale-invariant supergravity formulation with a nilpotent chiral scalar curvature, expanding the understanding of Goldstino couplings in supergravity.

Findings

The theory describes a massless scalaron and a massive axion in a de Sitter universe.

Establishes a duality between higher-curvature supergravity and a nilpotent chiral scalar curvature model.

Abstract

A scale invariant Goldstino theory coupled to Supergravity is obtained as a standard supergravity dual of a rigidly scale invariant higher--curvature Supergravity with a nilpotent chiral scalar curvature. The bosonic part of this theory describes a massless scalaron and a massive axion in a de Sitter Universe.