Sub-Planckian scale and limits for $f(R)$ models
General Relativity and Quantum Cosmology
2023-04-20 v2
Abstract
We study the Universe evolution starting from the sub-Planckian scale to present times. The requirement for an exponential expansion of the space with the observed metric as a final stage leads to significant restrictions on the parameter values of a -function. An initial metric of the Universe is supposed to be maximally symmetric with the positive curvature.
Cite
@article{arxiv.2102.06890,
title = {Sub-Planckian scale and limits for $f(R)$ models},
author = {P. M. Petryakova and Arkady A. Popov and Sergey G. Rubin},
journal= {arXiv preprint arXiv:2102.06890},
year = {2023}
}