Journal
PHYSICS LETTERS B
Volume 769, Issue -, Pages 561-568Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2017.03.036
Keywords
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Funding
- Chinese National Youth Thousand Talents Program [KJ2030220006]
- USTC start-up funding [KY2030000049]
- National Natural Science Foundation of China [11421303, 11653002]
- Fund for Fostering Talents in Basic Science of the National Natural Science Foundation of China [J1310021]
- Yan Jici Talent Students Program
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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.
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