Tracing primordial black holes in nonsingular bouncing cosmology

被引：21

作者：

Chen, Jie-Wen ^{[1
]}

Liu, Junyu ^{[1
,2
]}

Xu, Hao-Lan ^{[1
,3
]}

Cai, Yi-Fu ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Anhua 230026, Peoples R China

[2] CALTECH, Dept Phys, Pasadena, CA 91125 USA

[3] Univ Paris 06, UMR CNRS 7095, Inst Astrophys Paris, 98 Bis Blvd Arago, F-75014 Paris, France

来源：

PHYSICS LETTERS B | 2017年 / 769卷

基金：

中国国家自然科学基金;

关键词：

INFLATION; GALAXIES; CLUSTERS; UNIVERSE; VACUUM; MATTER;

D O I：

10.1016/j.physletb.2017.03.036

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We in this paper investigate the formation and evolution of primordial black holes (PBHs) in nonsingular bouncing cosmologies. We discuss the formation of PBH in the contracting phase and calculate the PBH abundance as a function of the sound speed and Hubble parameter. Afterwards, by taking into account the subsequent PBH evolution during the bouncing phase, we derive the density of PBHs and their Hawking radiation. Our analysis shows that nonsingular bounce models can be constrained from the backreaction of PBHs. (C) 2017 The Authors. Published by Elsevier B.V.

引用

页码：561 / 568

页数：8

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