論文

査読有り
2014年1月

Identifying the most crucial parameters of the initial curvature profile for primordial black hole formation

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
  • Tomohiro Nakama
  • ,
  • Tomohiro Harada
  • ,
  • A. G. Polnarev
  • ,
  • Jun'ichi Yokoyama

2014
1
開始ページ
037
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1088/1475-7516/2014/01/037
出版者・発行元
IOP PUBLISHING LTD

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 an extremely wide class of curvature profiles characterized by five parameters, (in contrast to only two parameters used in all previous papers) which specify the curvature profiles not only at the central region but also at the outer boundary of configurations. It is shown that formation or non-formation of PBHs is determined essentialy by only two roaster parameters one of which can be presented as an integral of curvature over initial configurations and the other is presented in terms of the position of the boundary and the edge of the core.


リンク情報
DOI
https://doi.org/10.1088/1475-7516/2014/01/037
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000331134400038&DestApp=WOS_CPL
ID情報
  • DOI : 10.1088/1475-7516/2014/01/037
  • ISSN : 1475-7516
  • Web of Science ID : WOS:000331134400038

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