Investigating formation condition of primordial black holes for generalized initial perturbation profiles
General Relativity and Quantum Cosmology
2014-01-31 v1
Abstract
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.
Keywords
Cite
@article{arxiv.1401.7740,
title = {Investigating formation condition of primordial black holes for generalized initial perturbation profiles},
author = {Tomohiro Nakama and Tomohiro Harada and A. G. Polnarev and Jun'ichi Yokoyama},
journal= {arXiv preprint arXiv:1401.7740},
year = {2014}
}
Comments
to appear in the proceedings of The 10th International Symposium on Cosmology and Particle Astrophysics (CosPA2013)