Processing of Cosmological Perturbations in a Cyclic Cosmology
High Energy Physics - Theory
2009-09-02 v1
Abstract
The evolution of the spectrum of cosmological fluctuations from one cycle to the next is studied. It is pointed out that each cycle leads to a reddening of the spectrum. This opens up new ways to generate a scale-invariant spectrum of curvature perturbations. The large increase in the amplitude of the fluctuations quickly leads to a breakdown of the linear theory. More generaly, we see that, after including linearized cosmological perturbations, a cyclic universe cannot be truly cyclic.
Cite
@article{arxiv.0905.1514,
title = {Processing of Cosmological Perturbations in a Cyclic Cosmology},
author = {Robert H. Brandenberger},
journal= {arXiv preprint arXiv:0905.1514},
year = {2009}
}
Comments
5 pages, 1 figure