Spatially-Homogeneous Cosmologies
General Relativity and Quantum Cosmology
2024-09-25 v1
Abstract
The necessary and sufficient conditions for a perfect fluid solution to define a spatially-homogeneous cosmology are achieved. These conditions are Intrinsic, Deductive, Explicit and ALgorithmic, and they offer an IDEAL labeling of these geometries. When a three-dimensional group acts on the three-dimensional space-like orbits, the Bianchi type of the model is also obtained.
Cite
@article{arxiv.2409.15854,
title = {Spatially-Homogeneous Cosmologies},
author = {Juan Antonio Sáez and Salvador Mengual and Joan Josep Ferrando},
journal= {arXiv preprint arXiv:2409.15854},
year = {2024}
}
Comments
25 pages, 4 figures, 1 supplementary documentation