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 ∼10 −20–10 5 M ⊙. We find that in a wide range of parameter space, we obtain PBHs which amount to Ω≃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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