All G_2 invariant critical points of maximal supergravity

TL;DR

This paper classifies all G_2 invariant critical points in maximal supergravity, revealing four branches of AdS solutions with invariant mass spectra, including a new stable non-supersymmetric point, across various gauge groups.

Contribution

It provides an exhaustive classification of G_2 invariant extrema in maximal supergravity, identifying new stable non-supersymmetric solutions and analyzing their properties.

Findings

Four branches of AdS solutions with invariant mass spectra

Discovery of a new stable non-supersymmetric critical point

Mass spectra invariance across varying gauge groups

Abstract

We perform an exhaustive classification of G_2 invariant extrema of the most general gauged N=8 supergravity in four dimensions. They comprise four branches of Anti-de Sitter solutions labelled by a single parameter. Interestingly, while the gauge groups vary with the parameters, the mass spectra are invariant. One of these is a new non-supersymmetric yet stable point. Our analysis includes the recently proposed family of SO(8) gauged supergravities and more.