Moduli Inflation from Dynamical Supersymmetry Breaking

Details Moduli Inflation from Dynamical Supersymmetry Breaking Moduli Inflation from Dynamical Supersymmetry Breaking

1995-03-18

arxiv.org/abs/hep-th/9503113v2

Phys.Lett. B351 (1995) 424-430

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, latex, improved discussion of reheating for composite inflatons

Scientific paper

10.1016/0370-2693(95)00417-J

Moduli fields, which parameterize perturbative flat directions of the potential in supersymmetric theories, are natural candidates to act as inflatons. An inflationary potential on moduli space can result if the scale of dynamical SUSY breaking in some sector of the theory is determined by a moduli dependent coupling. The magnitude of density fluctuations generated during inflation then depends on the scale of SUSY breaking in this sector. This can naturally be hierarchically smaller than the Planck scale in a dynamical model, giving small fluctuations without any fine tuning of parameters. It is also natural for SUSY to be restored at the minimum of the moduli potential, and to leave the universe with zero cosmological constant after inflation. Acceptable reheating can also be achieved in this scenario.

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