Double inflation in supergravity and the primordial black hole formation
High Energy Physics - Phenomenology
2008-11-26 v2 Astrophysics
General Relativity and Quantum Cosmology
Abstract
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.
Keywords
Cite
@article{arxiv.hep-ph/0002236,
title = {Double inflation in supergravity and the primordial black hole formation},
author = {Toshiyuki Kanazawa and M. Kawasaki and T. Yanagida},
journal= {arXiv preprint arXiv:hep-ph/0002236},
year = {2008}
}
Comments
14 pages, 2 figures (RevTeX file)