Supergravity Inflation Free from Harmful Relics

Details Supergravity Inflation Free from Harmful Relics Supergravity Inflation Free from Harmful Relics

2002-08-30

arxiv.org/abs/hep-ph/0208276v2

Phys.Rev.D68:043502,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, revtex, 1 eps figure, references added, conclusion section expanded

Scientific paper

10.1103/PhysRevD.68.043502

We present a realistic supergravity inflation model which is free from the overproduction of potentially dangerous relics in cosmology, namely moduli and gravitinos which can lead to the inconsistencies with the predictions of baryon asymmetry and nucleosynthesis. The radiative correction turns out to play a crucial role in our analysis which raises the mass of supersymmetry breaking field to intermediate scale. We pay a particular attention to the non-thermal production of gravitinos using the non-minimal Kahler potential we obtained from loop correction. This non-thermal gravitino production however is diminished because of the relatively small scale of inflaton mass and small amplitudes of hidden sector fields.

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