De Sitter universes and the emerging landscape in string theory

SANDIP P TRIVEDI

Department of Theoretical Physics, Tata Institute of Fundamental Research, Mumbai 400 005, India

E-mail: sandip@theory.tifr.res.in

Abstract. We discuss a recent proposal to construct de Sitter vacua in string theory. It is based on flux compactifications in string theory where all the moduli are stabilised and supersymmetry is broken with control. The resulting picture is that of a complicated landscape with many vacua of widely varying values for the cosmological constant.

Keywords. String theory; flux; de Sitter universe.

PACS Nos 11.25.Yb; 98.80.-k