Phenomenological aspects of Horava-Lifshitz cosmology

被引：109

作者：

Mukohyama, Shinji ^{[2
]}

Nakayama, Kazunori ^{[1
]}

Takahashi, Fuminobu ^{[2
]}

Yokoyama, Shuichiro ^{[3
]}

机构：

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

[2] Univ Tokyo, Inst Phys & Math Universe, Chiba 2778568, Japan

[3] Nagoya Univ, Dept Phys & Astrophys, Aichi 4648502, Japan

来源：

PHYSICS LETTERS B | 2009年 / 679卷 / 01期

关键词：

QUANTUM-GRAVITY; LEPTOGENESIS;

D O I：

10.1016/j.physletb.2009.07.005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that, assuming the dispersion relation proposed recently by Horava in the context of quantum gravity, radiation energy density exhibits a peculiar dependence on the scale factor: the radiation energy density decreases proportional to a(-6). This simple scaling can have an impact on cosmology. As an example, we show that the resultant baryon asymmetry as well as the stochastic gravity waves can be enhanced. We also discuss current observational constraint on the dispersion relation. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：6 / 9

页数：4

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