Covariant cosmological perturbation dynamics in the large-scale limit
General Relativity and Quantum Cosmology
2009-10-31 v1 Astrophysics
Abstract
Using the existence of a covariant conserved quantity on large perturbation scales in a spatially flat perfect fluid or scalar field universe, we present a general formula for gauge-invariantly defined comoving energy density perturbations which encodes the entire linear perturbation dynamics in a closed time integral. On this basis we discuss perturbation modes in different cosmological epochs.
Keywords
Cite
@article{arxiv.gr-qc/9804022,
title = {Covariant cosmological perturbation dynamics in the large-scale limit},
author = {Winfried Zimdahl and Diego Pavon},
journal= {arXiv preprint arXiv:gr-qc/9804022},
year = {2009}
}
Comments
4 pages, Revtex, to appear in PRD