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arXiv · 1711.06129

Double inflation as a single origin of primordial black holes for all dark matter and LIGO observations

Keisuke Inomata·Masahiro Kawasaki·Kyohei Mukaida·Tsutomu T. Yanagida
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Abstract

Primordial Black Hole (PBH) is one of the leading non-particle candidates for dark matter (DM). Although several observations severely constrain the amount of PBHs, it is recently pointed out that there is an uncertainty on the microlensing constraints below $\sim 10^{-10} M_\odot$ which was ignored originally but may weaken the constraints significantly. In this paper, facing this uncertainty, we investigate the possibility that PBHs can make up all DM in a broad mass spectrum. Moreover, we propose a concrete inflation model which can simultaneously produce PBHs for all DM in a broad mass spectrum around $\mathcal O(10^{-13}) M_\odot$ and PBHs for LIGO events in a sharp mass spectrum at $\mathcal O(10) M_\odot$.

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Keisuke Inomata, Masahiro Kawasaki, Kyohei Mukaida, Tsutomu T. Yanagida. 2017-11-16. Double inflation as a single origin of primordial black holes for all dark matter and LIGO observations. https://doi.org/10.1103/physrevd.97.043514

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