Modeling Background Radiation in Isotropic Cosmologies
General Relativity and Quantum Cosmology
2011-05-09 v1
Abstract
Using explicit perturbations of isotropic cosmological models which describe simple gravitational waves, an isotropic tensor having the algebraic symmetries of the Bel-Robinson tensor is derived as a model of cosmic background gravitational radiation and this is used to provide an answer to the question: in what sense can an energy-momentum-stress tensor similar to that describing the cosmic microwave background radiation (neglecting anisotropies) be associated with an isotropic background of gravitational radiation?
Cite
@article{arxiv.1101.2991,
title = {Modeling Background Radiation in Isotropic Cosmologies},
author = {P. A. Hogan and S. O'Farrell},
journal= {arXiv preprint arXiv:1101.2991},
year = {2011}
}
Comments
15 pages, Latex file, accepted for publication in General Relativity and Gravitation