Double inflation in supergravity and the primordial black hole formation

Details Double inflation in supergravity and the primordial black hole formation Double inflation in supergravity and the primordial black hole formation

2000-02-23

arxiv.org/abs/hep-ph/0002236v2

Phys.Lett.B482:174-182,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 2 figures (RevTeX file)

Scientific paper

10.1016/S0370-2693(00)00499-8

We study a double inflation model (a hybrid inflation + a new inflation) in supergravity and discuss the formation of primordial black holes (PBHs) with mass \sim 10^{-20}-10^{5}M_{\odot}. We find that in a wide range of parameter space, we obtain PBHs which amount to \Omega \simeq 1, i.e., PBH dark matter. Also, we find a set of inflation parameters which produces PBHs evaporating now. Those PBHs may be responsible for antiproton fluxes observed by the BESS experiment.

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