Metric Perturbation Approach to Gravitational Waves in Isotropic Cosmologies
arXiv:gr-qc/0401106 · doi:10.1103/PhysRevD.69.064038
Abstract
Gravitational waves in isotropic cosmologies were recently studied using the gauge-invariant approach of Ellis-Bruni. We now construct the linearised metric perturbations of the background Robertson-Walker space-time which reproduce the results obtained in that study. The analysis carried out here also facilitates an easy comparison with Bardeen.
29 pages, Latex file, accepted for publication in Physical Review D