Gauges and Cosmological Backreaction
General Relativity and Quantum Cosmology
2009-12-04 v3 Cosmology and Nongalactic Astrophysics
Abstract
We present a formalism for spatial averaging in cosmology applicable to general spacetimes and coordinates, and allowing the easy incorporation of a wide variety of matter sources. We apply this formalism to a Friedmann-LeMaitre-Robertson-Walker universe perturbed to second-order and present the corrections to the background in an unfixed gauge. We then present the corrections that arise in uniform curvature and conformal Newtonian gauges.
Cite
@article{arxiv.0903.3264,
title = {Gauges and Cosmological Backreaction},
author = {Iain A. Brown and Juliane Behrend and Karim A. Malik},
journal= {arXiv preprint arXiv:0903.3264},
year = {2009}
}
Comments
13 pages. Updated: reference added, typos corrected, exposition clarified. Version 3: Replaced with version published by JCAP