Supersymmetry and gauge symmetry breaking with naturally vanishing vacuum energy

TL;DR

This paper reviews N=1 supergravity models that achieve simultaneous Higgs and super-Higgs effects with zero classical vacuum energy, relevant for realistic string theory models.

Contribution

It introduces a framework for supergravity models with gauge symmetry breaking and vanishing vacuum energy, aligning with effective string theory descriptions.

Findings

Models exhibit naturally vanishing vacuum energy.

Goldstino components align with gauge-non-singlet directions.

Framework applicable to realistic string models.

Abstract

We review the construction of $N=1$ supergravity models where the Higgs and super-Higgs effects are simultaneously realized, with naturally vanishing classical vacuum energy and goldstino components along gauge-non-singlet directions: this situation is likely to occur in the effective theories of realistic string models. (Invited talk presented at SUSY--95, Palaiseau, France, 15--19 May 1995)