Non-singular non-flat universes
General Relativity and Quantum Cosmology
2021-12-28 v1
Abstract
The quest to understand better the nature of the initial cosmological singularity is with us since the discovery of the expanding universe. Here, we propose several non-flat models, among them the standard cosmological scenario with a critical cosmological constant, the Einstein-Cartan cosmology, the Milne-McCrea universe with quantum corrections and a non-flat universe with bulk viscosity. Within these models, we probe into the initial singularity by using different techniques. Several nonsingular universes emerge, one of the possibilities being a static non-expanding and stable Einstein universe.
Cite
@article{arxiv.2112.13042,
title = {Non-singular non-flat universes},
author = {Andres Felipe Estupinan Salamanca and Sergio Bravo Medina and Marek Nowakowski and Davide Batic},
journal= {arXiv preprint arXiv:2112.13042},
year = {2021}
}
Comments
31 pages, 14 figures