Primordial black hole formation from an axionlike curvaton model

Masahiro Kawasaki, Naoya Kitajima, Tsutomu T. Yanagida

Research output: Contribution to journalArticlepeer-review

125 Citations (Scopus)


We argue that the existence of the cold dark matter is explained by primordial black holes. We show that a significant number of primordial black holes can be formed in an axionlike curvaton model, in which the highly blue-tilted power spectrum of primordial curvature perturbations is achieved. It is found that the produced black holes with masses ∼1020-1038 g account for the present cold dark matter. We also argue the possibility of forming the primordial black holes with mass ∼105M⊙ as seeds of the supermassive black holes.

Original languageEnglish
Article number063519
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number6
Publication statusPublished - 2013 Mar 18


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