Tilted Hybrid Inflation

Details Tilted Hybrid Inflation Tilted Hybrid Inflation

1996-12-13

arxiv.org/abs/astro-ph/9612141v1

Phys.Lett.B398:18-22,1997

Astronomy and Astrophysics

Astrophysics

4 pages, revtex, no figures

Scientific paper

10.1016/S0370-2693(97)00211-6

We propose a new version of the hybrid inflation scenario that produces a significantly tilted n>1 spectrum of curvature perturbations. This may happen in supersymmetric models where the inflaton field acquires a mass proportional to the Hubble constant, and in the models where this field non-minimally couples to gravity. A large tilt of the spectrum in this scenario is often accompanied by a considerable contribution of tensor perturbations to the temperature anisotropies. We also show that under certain conditions the spectrum of density perturbations in this scenario may have a minimum on an intermediate length scale.

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