TY - JOUR
T1 - Inflaton decay through supergravity effects
AU - Endo, Motoi
AU - Kawasaki, Masahiro
AU - Takahashi, Fuminobu
AU - Yanagida, T. T.
N1 - Funding Information:
M.E. and F.T. would like to thank the Japan Society for Promotion of Science for financial support. The work of T.T.Y. has been supported in part by a Humboldt Research Award.
Copyright:
Copyright 2006 Elsevier B.V., All rights reserved.
PY - 2006/11/23
Y1 - 2006/11/23
N2 - 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.
AB - 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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U2 - 10.1016/j.physletb.2006.09.044
DO - 10.1016/j.physletb.2006.09.044
M3 - Article
AN - SCOPUS:33750611626
VL - 642
SP - 518
EP - 524
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 5-6
ER -