TY - JOUR
T1 - Anomaly-induced inflaton decay and gravitino-overproduction problem
AU - Endo, Motoi
AU - Takahashi, Fuminobu
AU - Yanagida, T. T.
PY - 2008/1/10
Y1 - 2008/1/10
N2 - We point out that the inflaton spontaneously decays into any gauge bosons and gauginos via the super-Weyl, Kähler and sigma-model anomalies in supergravity, once the inflaton acquires a non-vanishing vacuum expectation value. In particular, in the dynamical supersymmetry breaking scenarios, the inflaton necessarily decays into the supersymmetry breaking sector, if the inflaton mass is larger than the dynamical scale. This generically causes the overproduction of the gravitinos, which severely constrains the inflation models.
AB - We point out that the inflaton spontaneously decays into any gauge bosons and gauginos via the super-Weyl, Kähler and sigma-model anomalies in supergravity, once the inflaton acquires a non-vanishing vacuum expectation value. In particular, in the dynamical supersymmetry breaking scenarios, the inflaton necessarily decays into the supersymmetry breaking sector, if the inflaton mass is larger than the dynamical scale. This generically causes the overproduction of the gravitinos, which severely constrains the inflation models.
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U2 - 10.1016/j.physletb.2007.09.019
DO - 10.1016/j.physletb.2007.09.019
M3 - Article
AN - SCOPUS:37549038695
VL - 658
SP - 236
EP - 240
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
ER -