Suppression of large-scale perturbations by stiff solid
General Relativity and Quantum Cosmology
2015-01-29 v1
Abstract
Evolution of large-scale scalar perturbations in the presence of stiff solid (solid with pressure to energy density ratio > 1/3) is studied. If the solid dominated the dynamics of the universe long enough, the perturbations could end up suppressed by as much as several orders of magnitude. To avoid too steep large-angle power spectrum of CMB, radiation must have prevailed over the solid long enough before recombination.
Cite
@article{arxiv.1501.07262,
title = {Suppression of large-scale perturbations by stiff solid},
author = {Vladimír Balek and Matej Škovran},
journal= {arXiv preprint arXiv:1501.07262},
year = {2015}
}
Comments
14 pages, 1 figure. arXiv admin note: substantial text overlap with arXiv:1401.7004