Perturbations of Kantowski-Sachs models
General Relativity and Quantum Cosmology
2014-12-23 v1
Abstract
Perturbations of Kantowski-Sachs models with a positive cosmological constant are considered in a harmonic decomposition, in the framework of gauge invariant 1+3 and 1+1+2 covariant splits of spacetime. Scalar, vector and tensor modes are allowed, however they remain vorticity-free and of perfect fluid type. The dynamics is encompassed in six evolution equations for six harmonic coefficients.
Cite
@article{arxiv.1303.4576,
title = {Perturbations of Kantowski-Sachs models},
author = {Michael Bradley and Mats Forsberg and Zoltán Keresztes and László Á. Gergely and Peter K. S. Dunsby},
journal= {arXiv preprint arXiv:1303.4576},
year = {2014}
}
Comments
3 pages, to be published in the Proceedings of the Thirteenth Marcel Grossmann Meeting, Stockholm, Sweden 2012