Tracing Primordial Black Holes in Nonsingular Bouncing Cosmology
General Relativity and Quantum Cosmology
2017-05-18 v3 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
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.
Cite
@article{arxiv.1609.02571,
title = {Tracing Primordial Black Holes in Nonsingular Bouncing Cosmology},
author = {Jie-Wen Chen and Junyu Liu and Hao-Lan Xu and Yi-Fu Cai},
journal= {arXiv preprint arXiv:1609.02571},
year = {2017}
}
Comments
19 pages, 4 figures, comments are welcome