On perturbations of a quintom bounce

被引：97

作者：

Cai, Yi-Fu ^{[1
]}

Qiu, Taotao ^{[1
]}

Brandenberger, Robert ^{[2
,3
]}

Piao, Yun-Song ^{[4
]}

Zhang, Xinmin ^{[1
,5
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100049, Peoples R China

[2] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[3] Kavli Inst Theoret Phys, Beijing 100080, Peoples R China

[4] Chinese Acad Sci, Grad Sch, Coll Phys Sci, Beijing 100049, Peoples R China

[5] Chinese Acad Sci, Theoret Phys Ctr Sci Facilit, Beijing, Peoples R China

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2008年 / 03期

基金：

英国科研创新办公室;

关键词：

cosmological perturbation theory; cosmology of theories beyond the SM; physics of the early universe;

D O I：

10.1088/1475-7516/2008/03/013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A quintom universe with an equation of state crossing the cosmological constant boundary can provide a bouncing solution dubbed the quintom bounce and thus resolve the big bang singularity. In this paper, we investigate the cosmological perturbations of the quintom bounce both analytically and numerically. We find that the fluctuations in the dominant mode in the post-bounce expanding phase couple to the growing mode of the perturbations in the pre-bounce contracting phase.

引用

页数：24

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