Solving Cosmological Problems of Supersymmetric Axion Models in an Inflationary Universe

Details Solving Cosmological Problems of Supersymmetric Axion Models in an Inflationary Universe Solving Cosmological Problems of Supersymmetric Axion Models in an Inflationary Universe

2008-02-18

arxiv.org/abs/0802.2487v2

Phys.Rev.D77:123524,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 4 figures

Scientific paper

10.1103/PhysRevD.77.123524

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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