Scale-free power spectrums in the delayed cosmology
Cosmology and Nongalactic Astrophysics
2017-03-15 v2
Abstract
The delayed cosmology [JCAP 02(2012)046] assumes that the evolution of geometries is delayed relative to that of matter and/or energies. This idea allows inflation occur without inflaton fields or vacuum energies of any kind as drivings. We considered the production and evolution of primordial perturbations in this model. The results indicate that, with delaying, we could get a nearly scale-free power spectrum of perturbations starting from a radiation dominated early universe.
Cite
@article{arxiv.1412.7931,
title = {Scale-free power spectrums in the delayed cosmology},
author = {Shi-hui Yang and Ding-fang Zeng},
journal= {arXiv preprint arXiv:1412.7931},
year = {2017}
}
Comments
basic ideas remain the same, numerical results improved remarkably