$\Lambda$CDM Bounce Cosmology without $\Lambda$CDM: the case of modified gravity
Abstract
We provide an gravity description of a CDM bouncing model, without the need for matter fluids or for cosmological constant. As we explicitly demonstrate, the two cosmological eras that constitute the CDM bouncing model, can be generated by gravity which can lead to accelerating cosmologies. The resulting F(R) gravity has Einstein frame inflationary properties that have concordance to the latest Planck observational data. Both the gravity stability properties are thoroughly investigated and also, the gravitational particle production, a feature necessary for the viability of the CDM bounce scenario, is also addressed. As we will show, the CDM bounce model can be successfully described by pure gravity, with appealing phenomenological attributes, which we extensively discuss.
Cite
@article{arxiv.1502.06125,
title = {$\Lambda$CDM Bounce Cosmology without $\Lambda$CDM: the case of modified gravity},
author = {S. D. Odintsov and V. K. Oikonomou},
journal= {arXiv preprint arXiv:1502.06125},
year = {2015}
}
Comments
31 pages, accepted by PRD