Double inflation as a single origin of primordial black holes for all dark matter and LIGO observations
Double inflation as a single origin of primordial black holes for all dark matter and LIGO observations
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DOI：
10.1103/physrevd.97.043514
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发表时间：
2017-11
影响因子：
5
通讯作者：
Keisuke Inomata;M. Kawasaki;K. Mukaida;T. Yanagida
中科院分区：
文献类型：
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作者：
Keisuke Inomata;M. Kawasaki;K. Mukaida;T. Yanagida
原初黑洞（PBH）是暗物质（DM）的主要非粒子候选者之一。尽管一些观测结果对原初黑洞的数量有严格限制，但最近有人指出，在约$10^{-10}M_{\odot}$以下的微引力透镜限制存在不确定性，这一不确定性最初被忽视，但可能会显著削弱这些限制。在本文中，面对这一不确定性，我们研究了原初黑洞在较宽质量谱中构成所有暗物质的可能性。此外，我们提出了一个具体的暴胀模型，该模型能够同时在约$\mathcal{O}(10^{-13})M_{\odot}$的较宽质量谱中产生构成所有暗物质的原初黑洞，以及在约$\mathcal{O}(10)M_{\odot}$的窄质量谱中产生用于解释LIGO事件的原初黑洞。
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 $\mathcal O(10) M_\odot$.