Primordial Black Holes as All Dark Matter

Details Primordial Black Holes as All Dark Matter Primordial Black Holes as All Dark Matter

2010-01-13

arxiv.org/abs/1001.2308v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 2 figures, a version to appear in JCAP.

Scientific paper

We argue that a primordial black hole is a natural and unique candidate for all dark matter. We show that, in a smooth-hybrid new double inflation model, a right amount of the primordial black holes, with a sharply-defined mass, can be produced at the end of the smooth-hybrid regime, through preheating. We first consider masses < 10^(-7)M_sun which are allowed by all the previous constraints. We next discuss much heavier mass 10^5 M_sun hinted at by entropy, and galactic size evolution, arguments. Effects on the running of the scalar spectral index are computed.

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