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arXiv · 0802.2487

Solving Cosmological Problems of Supersymmetric Axion Models in an Inflationary Universe

Masahiro Kawasaki·Kazunori Nakayama
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Abstract

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.

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Masahiro Kawasaki, Kazunori Nakayama. 2008-04-28. Solving Cosmological Problems of Supersymmetric Axion Models in an Inflationary Universe. https://doi.org/10.1103/physrevd.77.123524

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