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Inflaton Decay through Supergravity Effects

Motoi Endo·Masahiro Kawasaki·Fuminobu Takahashi·T. T. Yanagida
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Abstract

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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Motoi Endo, Masahiro Kawasaki, Fuminobu Takahashi, T. T. Yanagida. 2006-11-08. Inflaton Decay through Supergravity Effects. https://doi.org/10.1016/j.physletb.2006.09.044

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