Primordial braneworld black holes: significant enhancement of lifetimes through accretion

Details Primordial braneworld black holes: significant enhancement of lifetimes through accretion Primordial braneworld black holes: significant enhancement of lifetimes through accretion

2003-03-12

arxiv.org/abs/astro-ph/0303250v1

Pramana62:737-740,2004

Astronomy and Astrophysics

Astrophysics

Latex, 3 pages; talk delivered at PASCOS'03 in TIFR, Mumbai; to be published in a special issue of 'Pramana'

Scientific paper

10.1007/BF02705359

The Randall-Sundrum (RS-II) braneworld cosmological model with a fraction of the total energy density in primordial black holes is considered. Due to their 5-d geometry these black holes undergo modified Hawking evaporation. It is shown that during the high energy regime accretion from the surrounding radiation bath is dominant compared to evaporation. This effect increases the mass of the black holes till the onset of matter (or black hole) domination of the total energy density. Thus black holes with even very small initial masses could survive till several cosmologically interesting eras.

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