Primordial Black Hole Minimum Mass

Details Primordial Black Hole Minimum Mass Primordial Black Hole Minimum Mass

2006-04-07

arxiv.org/abs/astro-ph/0604174v2

Phys.Rev. D74 (2006) 043512

Astronomy and Astrophysics

Astrophysics

9 pages, no figures, replaced with version published in PRD

Scientific paper

10.1103/PhysRevD.74.043512

In this paper we revisit thermodynamic constraints on primordial black hole (PBH) formation in the early universe. Under the assumption that PBH mass is equal to the cosmological horizon mass, one can use the 2nd Law of Thermodynamics to put a lower limit on the PBH mass. In models of PBH formation, however, PBHs are created at some fraction of the horizon mass. We show that this thermodynamic constraint still holds for sub-horizon PBH formation.

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