Remarks on the cosmological constant appearing as an initial condition for Milne-like spacetimes
General Relativity and Quantum Cosmology
2022-07-27 v3 High Energy Physics - Theory
Mathematical Physics
Differential Geometry
math.MP
Abstract
Milne-like spacetimes are a class of FLRW spacetimes which admit continuous spacetime extensions through the big bang. In a previous paper [30], it was shown that the cosmological constant appears as an initial condition for Milne-like spacetimes. In this paper, we generalize this statement to spacetimes which share similar geometrical properties with Milne-like spacetimes but without the strong spatially isotropic assumption associated with them. We show how our results yield a "quasi de Sitter" expansion for the early universe which could have applications to inflationary scenarios.
Keywords
Cite
@article{arxiv.2202.04014,
title = {Remarks on the cosmological constant appearing as an initial condition for Milne-like spacetimes},
author = {Eric Ling},
journal= {arXiv preprint arXiv:2202.04014},
year = {2022}
}
Comments
16 pages, 3 figures, article for the conference "Singularity theorems, causality, and all that; a tribute to Roger Penrose." Final version to appear in GRG