Density perturbations in braneworld cosmology and primordial black holes
Cosmology and Nongalactic Astrophysics
2015-03-17 v1
Abstract
We study, by numerical methods, the time evolution of scalar perturbations in radiation era of Randall-Sundrum braneworld cosmology. Our results confirm an existence of the enhancement of perturbation amplitudes (near horizon crossing), discovered recently. We suggest the approximate solution of equations of the perturbation theory in the high energy regime, which predicts that the enhancement factor is asymptotically constant, as a function of scale. We discuss the application of this result for the problem of primordial black hole production in braneworld cosmology.
Keywords
Cite
@article{arxiv.1012.1199,
title = {Density perturbations in braneworld cosmology and primordial black holes},
author = {Edgar Bugaev and Peter Klimai},
journal= {arXiv preprint arXiv:1012.1199},
year = {2015}
}
Comments
12 pages, 8 figures