N=2 supergravity models with stable de Sitter vacua

In this paper, we shall review the construction of 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 ( 2). After briefly reviewing the role of de Sitter spacetimes in inflationary cosmology, we shall describe the main ingredients which were necessary for the construction of gauged 2 supergravity models admitting stable solutions of this kind.