The Oscillating Universe: an Alternative to Inflation
摘要
The aim of this paper is to show, that the 'oscillating universe' is a viable alternative to inflation. We remind that this model provides a natural solution to the flatness or entropy and to the horizon problem of standard cosmology. We study the evolution of density perturbations and determine the power spectrum in a closed universe. The results lead to constraints of how a previous cycle might have looked like. We argue that most of the radiation entropy of the present universe may have originated from gravitational entropy produced in a previous cycle. We show that measurements of the power spectrum on very large scales could in principle decide whether our universe is closed, flat or open.
引用
@article{arxiv.gr-qc/9510041,
title = {The Oscillating Universe: an Alternative to Inflation},
author = {Ruth Durrer and Joachim Laukenmann},
journal= {arXiv preprint arXiv:gr-qc/9510041},
year = {2016}
}
备注
revised version for publication in Classical and Quantum Gravity, 23 pages, uuencoded compressed tarred Latex file with 7 eps figures included, fig.8 upon request