G_2 cosmological models separable in non-comoving coordinates
General Relativity and Quantum Cosmology
2009-10-31 v1
Abstract
We study new separable orthogonally transitive abelian G_2 on S_2 models with two mutually orthogonal integrable Killing vector fields. For this purpose we consider separability of the metric functions in a coordinate system in which the velocity vector field of the perfect fluid does not take its canonical form, providing thereby solutions which are non-separable in comoving coordinates in general. Some interesting general features concerning this class of solutions are given. We provide a full classification for these models and present several families of explicit solutions with their properties.
Keywords
Cite
@article{arxiv.gr-qc/9803069,
title = {G_2 cosmological models separable in non-comoving coordinates},
author = {José M. M. Senovilla and Raül Vera},
journal= {arXiv preprint arXiv:gr-qc/9803069},
year = {2009}
}
Comments
latex, 26 pages, accepted for publication in Class. Quantum Grav