Solving Cosmological Problems of Supersymmetric Axion Models in an Inflationary Universe

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We revisit inflationary cosmology of axion models in the light of recent developments on the inflaton decay in supergravity. We find that all the cosmological difficulties, including gravitino, axino overproduction and axionic isocurvature fluctuation, can be avoided if the saxion field has large initial amplitude during inflation and decays before big-bang nucleosynthesis.
19 pages, 4 figures

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/200227

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0802.2487
 http://arxiv.org/abs/0802.2487
 Phys.Rev.D77:123524,2008
 doi:10.1103/PhysRevD.77.123524

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arXiv