Condition for Primordial Black Hole Formation in Randall-Sundrum Cosmology

Details Condition for Primordial Black Hole Formation in Randall-Sundrum Cosmology Condition for Primordial Black Hole Formation in Randall-Sundrum Cosmology

2004-03-30

arxiv.org/abs/astro-ph/0403668v2

Phys.Lett. B591 (2004) 203-207

Astronomy and Astrophysics

Astrophysics

5 pages, no figure, revised version (a footnote and some references are added)

Scientific paper

10.1016/j.physletb.2004.04.038

We consider spherical collapse in the Randall-Sundrum type II model and estimate the critical over density for black hole formation in the radiation dominated era. It is found that when (density)$^{2}$-term is dominant in the modified Friedmann equation the critical density is smaller than in the standard cosmology, which implies that PBHs are more easily produced in the Randall-Sundrum model.

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