Cosmic Acceleration in Massive Half-Maximal Supergravity

Anne-Christine Davis; Carsten van de Bruck; Philippe Brax

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Cosmic Acceleration in Massive Half-Maximal Supergravity

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arxiv hep-th/0411208 v1 pith:WK4NRCTE submitted 2004-11-23 hep-th astro-phhep-ph

Philippe Brax , Carsten van de Bruck , Anne-Christine Davis This is my paper

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keywords dimensionshalf-maximalmassivesupergravityacceleratedaccelerationbalancingbreaks

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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.

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