Cosmic Acceleration in Massive Half-Maximal Supergravity
arXiv:hep-th/0411208 · doi:10.1016/j.physletb.2005.01.035
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 S^3, 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.
11 pages, 3 figures