N=2 supergravity models with stable de Sitter vacua

TL;DR

This paper reviews the construction of N=2 supergravity models that feature stable de Sitter vacua, marking the first such stable solutions with positive cosmological constant in extended supergravity theories.

Contribution

It introduces new gauged N=2 supergravity models that admit stable de Sitter vacua, expanding the landscape of stable solutions in supergravity.

Findings

First stable de Sitter vacua in extended supergravity

Identification of key ingredients for stable solutions

Relevance to inflationary cosmology

Abstract

In the present talk I shall review the construction of N=2 supergravity models exhibiting stable de Sitter vacua. These solutions represent the first instance of stable backgrounds with positive cosmological constant in the framework of extended supergravities (N >=2). After briefly reviewing the role of de Sitter space--times in inflationary cosmology, I shall describe the main ingredients which were necessary for the construction of gauged N=2 supergravity models admitting stable solutions of this kind.