Solving cosmological problems of supersymmetric axion models in an inflationary universe

被引：26
|
作者：
Kawasaki, Masahiro [1 ,2 ]
Nakayama, Kazunori [1 ]
机构：
[1] Univ Tokyo, Inst Cosm Ray Res, Chiba 2778582, Japan
[2] Univ Tokyo, Inst Phys & Math Universe, Chiba 2778582, Japan
来源：
PHYSICAL REVIEW D | 2008年 / 77卷 / 12期
关键词：
D O I：
10.1103/PhysRevD.77.123524
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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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页数：8
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