Stable de Sitter vacua in N=2, D=5 supergravity

TL;DR

This paper presents the first known stable de Sitter vacua in five-dimensional N=2 supergravity, highlighting the role of non-compact gaugings, tensor multiplets, and scalar manifold geometry.

Contribution

It introduces new stable de Sitter vacua in higher-dimensional supergravity and analyzes the conditions and geometric factors influencing their stability.

Findings

First examples of stable de Sitter vacua in D>4 supergravity

Non-compact gaugings with tensor multiplets are crucial

Scalar manifold geometry affects vacuum stability

Abstract

We find 5D gauged supergravity theories exhibiting stable de Sitter vacua. These are the first examples of stable de Sitter vacua in higher-dimensional (D>4) supergravity. Non-compact gaugings with tensor multiplets and R-symmetry gauging seem to be the essential ingredients in these models. They are however not sufficient to guarantee stable de Sitter vacua, as we show by investigating several other models. The qualitative behaviour of the potential also seems to depend crucially on the geometry of the scalar manifold.