Non-Gaussianity from attractor curvaton

被引：10

作者：

Harigaya, Keisuke ^{[1
]}

Ibe, Masahiro ^{[1
,2
]}

Kawasaki, Masahiro ^{[1
,2
]}

Yanagida, Tsutomu T. ^{[1
]}

机构：

[1] Univ Tokyo, Todai Inst Adv Study, Kavli Inst Phys & Math Universe, Kashiwa, Chiba 2778583, Japan

[2] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan

来源：

PHYSICAL REVIEW D | 2013年 / 87卷 / 06期

关键词：

CHAOTIC INFLATION; DARK-MATTER; BARYOGENESIS; PERTURBATIONS; SUPERSYMMETRY; FLUCTUATIONS; ANISOTROPY; PARTICLES; FIELDS;

D O I：

10.1103/PhysRevD.87.063514

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We propose a curvaton model in which the initial condition of the curvaton oscillation is determined by its attractor behavior during inflation. Assuming a chaotic inflation model, we find that the initial condition determined by the attractor behavior is appropriate to generate a sizable non-Gaussianity contribution to the curvature perturbation, which will be tested in the foreseeable future. Implications on the thermal history of the Universe and on particle physics models are also discussed. DOI: 10.1103/PhysRevD.87.063514

引用

页数：8

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