Sneutrino hybrid inflation in supergravity

被引：55

作者：

Antusch, S ^{[1
]}

Bastero-Gil, M

King, SF

Shafi, Q

机构：

[1] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England

[2] Univ Granada, Dept Fis Teor & Cosmos, E-19071 Granada, Spain

[3] Univ Granada, CAFPE, E-19071 Granada, Spain

[4] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA

来源：

PHYSICAL REVIEW D | 2005年 / 71卷 / 08期

关键词：

D O I：

10.1103/PhysRevD.71.083519

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We propose a hybrid inflation scenario in which the singlet sneutrino, the superpartner of the right-handed neutrino, plays the role of the inflaton. We study a minimal model of sneutrino hybrid inflation in supergravity, where we find a spectral index n(s)approximate to 1+2 gamma with vertical bar gamma vertical bar less than or similar to 0.02, and predict a running spectral index vertical bar dn(s)/dlnk vertical bar <<vertical bar gamma vertical bar and a tensor-to-scalar ratio r <gamma(2) for field values well below the Planck scale. In our scenario, the baryon asymmetry of our universe can be explained via nonthermal leptogenesis and a low reheat temperature T(RH)approximate to 10(6) GeV can be realized.

引用

页码：1 / 5

页数：5

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