Inflaton Decay through Supergravity Effects

Details Inflaton Decay through Supergravity Effects Inflaton Decay through Supergravity Effects

2006-07-14

arxiv.org/abs/hep-ph/0607170v2

Phys.Lett. B642 (2006) 518-524

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 4 figures. v2: a version published in PLB

Scientific paper

10.1016/j.physletb.2006.09.044

We point out that supergravity effects enable the inflaton to decay into all matter fields, including the visible and the supersymmetry breaking sectors, once the inflaton acquires a non-vanishing vacuum expectation value. The new decay processes have great impacts on cosmology; the reheating temperature is bounded below; the gravitinos are produced by the inflaton decay in a broad class of the dynamical supersymmetry breaking models. We derive the bounds on the inflaton mass and the vacuum expectation value, which severely constrain high-scale inflations such as the hybrid and chaotic inflation models.

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