How particle collisions increase the rate of accretion from the cosmological background onto primordial black holes in braneworld cosmology

Details How particle collisions increase the rate of accretion from the cosmological background onto primordial black holes in braneworld cosmology How particle collisions increase the rate of accretion from the cosmological background onto primordial black holes in braneworld cosmology

2005-10-07

arxiv.org/abs/astro-ph/0510212v2

Phys.Rev. D72 (2005) 121301

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevD.72.121301

It is shown that, contrary to the widespread opinion, particle collisions considerably increase accretion rate from the cosmological background onto 5D primordial black holes formed during the high-energy phase of the Randall-Sundrum Type II braneworld scenario. Increase of accretion rate leads to much tighter constraints on initial primordial black hole mass fraction imposed by the critical density limit and measurements of high-energy diffuse photon background and antiproton excess.

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