Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-07-14
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.
Endo Motoi
Kawasaki Masahiro
Takahashi Fuminobu
Yanagida Takayuki
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