Brans-Dicke Theory and primordial black holes in Early Matter-Dominated Era

Details Brans-Dicke Theory and primordial black holes in Early Matter-Dominated Era Brans-Dicke Theory and primordial black holes in Early Matter-Dominated Era

2009-05-22

arxiv.org/abs/0905.3657v4

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages

Scientific paper

10.1007/s10773-011-1014-5

We show that primordial black holes can be formed in the matter-dominated era with gravity described by the Brans-Dicke theory. Considering an early matter-dominated era between inflation and reheating, we found that the primordial black holes formed during that era evaporate at a quicker than those of early radiation-dominated era. Thus, in comparison with latter case, less number of primordial black holes could exist today. Again the constraints on primordial black hole formation tend towards the larger value than their radiation-dominated era counterparts indicating a significant enhancement in the formation of primordial black holes during the matter-dominaed era.

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