Polynomial chaotic inflation in supergravity

被引：65

作者：

Nakayama, Kazunori ^{[1
,3
]}

Takahashi, Fuminobu ^{[2
,3
]}

Yanagida, Tsutomu T. ^{[3
]}

机构：

[1] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[2] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[3] Univ Tokyo, TODIAS, Kavli Inst Phys & Math Universe WPI, Kashiwa, Chiba 2778583, Japan

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2013年 / 08期

关键词：

inflation; physics of the early universe; cosmology of theories beyond the SM; GRAVITINO-OVERPRODUCTION; FLATNESS; UNIVERSE; HORIZON; MATTER; DECAY;

D O I：

10.1088/1475-7516/2013/08/038

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a general polynomial chaotic inflation model in supergravity, for which the predicted spectral index and tensor-to-scalar ratio can lie within the 1 sigma region allowed by the Planck results. Most importantly, the predicted tensor-to-scalar ratio is large enough to be probed in the on-going and future B-mode experiments. We study the inflaton dynamics and the subsequent reheating process in a couple of specific examples. The non-thermal gravitino production from the inflaton decay can be suppressed in a case with a discrete Z(2) symmetry. We find that the reheating temperature can be naturally as high as O(10(9-10)) GeV, sufficient for baryon asymmetry generation through (non-)thermal leptogenesis.

引用

页数：19

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