Supergravity origin of the MSSM inflation

Details Supergravity origin of the MSSM inflation Supergravity origin of the MSSM inflation

2007-06-15

arxiv.org/abs/0706.2355v3

JCAP 0711:014,2007

Physics

High Energy Physics

High Energy Physics - Theory

v3: 10 pages, no figures; version accepted for publication. Typos corrected

Scientific paper

10.1088/1475-7516/2007/11/014

We consider the supergravity origin of the recently proposed MSSM inflationary model, which relies on the existence of a saddle point along a dimension six flat direction. We derive the conditions that the Kahler potential has to satisfy for the saddle point to exist irrespective of the hidden sector vevs. We show that these conditions are satisfied by a simple class of Kahler potentials, which we find to have a similar form as in various string theory compactifications. For these potentials, slow roll MSSM inflation requires no fine tuning of the soft supersymmetry breaking parameters.

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