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
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- 巻
- 2014
- 号
- 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
- ID情報
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- DOI : 10.1088/1475-7516/2014/01/037
- ISSN : 1475-7516
- Web of Science ID : WOS:000331134400038