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Investigating formation condition of primordial black holes for generalized initial perturbation profiles

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arxiv 1401.7740 v1 pith:EBRLS6LL submitted 2014-01-30 gr-qc

Tomohiro Nakama , Tomohiro Harada , A. G. Polnarev , Jun'ichi Yokoyama This is my paper
classification gr-qc
keywords formationpbhsprimordialblackcurvatureholesparametersprofiles
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Primordial black holes (PBHs) are an important tool in cosmology to probe the primordial spectrum of small-scale curvature perturbations that reenter the cosmological horizon during radiation domination epoch. We numerically solve the evolution of spherically symmetric highly perturbed configurations to clarify the criteria of PBHs formation using a wide class of curvature profiles characterized by five parameters. It is shown that formation or non-formation of PBHs is determined essentialy by only two master parameters.

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