Cosmic Acceleration in Massive Half-Maximal Supergravity
Abstract
We consider massive half-maximal supergravity in (d+3) dimensions and compactify it on a symmetric three space. We find that the static configurations of Minkowski X S3, obtained by balancing the positive scalar potential for the dilaton and the flux of a three-form through the three-sphere, are unstable. The resulting cosmological evolution breaks supersymmetry and leads to an accelerated expansion in d dimensions.
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