Regularized big bang singularity: Geodesic congruences
General Relativity and Quantum Cosmology
2021-10-29 v2
Abstract
We investigate a particular regularization of big bang singularity, which remains within the domain of 4-dimensional general relativity but allowing for degenerate metrics. We study the geodesics and geodesic congruences in the modified Friedmann-Lema\^itre-Robertson-Walker universe. In particular, we calculate the expansion of timelike and null geodesic congruences. Based on these results, we also briefly discuss the cosmological singularity theorems.
Cite
@article{arxiv.2109.04229,
title = {Regularized big bang singularity: Geodesic congruences},
author = {Z. L. Wang},
journal= {arXiv preprint arXiv:2109.04229},
year = {2021}
}
Comments
16 pages, 1 figure, published version