Scalar Perturbations Through Cycles
General Relativity and Quantum Cosmology
2015-06-03 v1
Abstract
We analytically and numerically investigate the evolutions of the scalar perturbations through the cycles with nonsingular bounce. It is found that the amplitude of the curvature perturbation on large scale will be amplified cycle by cycle, and the isocurvature perturbations also obtain an amplification, but the rate of its amplification is slower than that of curvature perturbation, unless its coupling to the metric perturbation is not negligible.
Cite
@article{arxiv.1201.1371,
title = {Scalar Perturbations Through Cycles},
author = {Zhi-Guo Liu and Yun-Song Piao},
journal= {arXiv preprint arXiv:1201.1371},
year = {2015}
}
Comments
7 pages, 10 figures