Minimal supergravity, inflation, and all that

We consider an inflationary model in the hidden-sector broken supergravity with an effectively large cutoff. The inflaton decay into right-handed neutrinos naturally causes the observed baryon asymmetry of the universe with a reheating temperature low enough to avoid the gravitino overproduction. We...

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Bibliographic Details
Published in:Physics letters. B 2006-06, Vol.637 (1-2), p.21-26
Main Authors: Ibe, M., Izawa, K.-I., Shinbara, Y., Yanagida, T.T.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Nuclear physics
Physics
The physics of elementary particles and fields
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Summary:We consider an inflationary model in the hidden-sector broken supergravity with an effectively large cutoff. The inflaton decay into right-handed neutrinos naturally causes the observed baryon asymmetry of the universe with a reheating temperature low enough to avoid the gravitino overproduction. We emphasize that all the phenomenological requirements from cosmology and particle physics are satisfied in the large-cutoff theory.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2006.04.011