Minimal Constrained Supergravity

TL;DR

This paper introduces minimal supergravity models with non-linear supersymmetry realization using constrained superfields, focusing on eliminating auxiliary fields directly, which leads to different actions from traditional de Sitter supergravities.

Contribution

It presents a novel approach to minimal supergravity by applying constraints that directly remove auxiliary fields, offering a new perspective on supergravity formulations.

Findings

Different actions from standard de Sitter supergravities due to direct auxiliary field elimination

Use of constrained superfields to realize non-linear supersymmetry

Framework for minimal supergravity models with simplified auxiliary field structure

Abstract

We describe minimal supergravity models where supersymmetry is non-linearly realized via constrained superfields. We show that the resulting actions differ from the so called "de Sitter" supergravities because we consider constraints eliminating directly the auxiliary fields of the gravity multiplet.