Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-08-11
Phys.Rev. D70 (2004) 123517
Physics
High Energy Physics
High Energy Physics - Theory
13 pages, revtex4
Scientific paper
10.1103/PhysRevD.70.123517
We present the complete set of propagation and constraint equations for the kinematic and non-local first order quantities which describe general linear inhomogeneous and anisotropic perturbations of a flat FRW braneworld with vanishing cosmological constant and decompose them in the standard way into their scalar, vector and tensor contributions. A detailed analysis of the perturbation dynamics is performed using dimensionless variables that are specially tailored for the different regimes of interest; namely, the low energy GR regime, the high energy regime and the dark energy regime. Tables are presented for the evolution of all the physical quantities, making it easy to do a detailed comparison of the past asymptotic behaviour of the perturbations of these models. We find results that exactly match those obtained in the analysis of the spatially inhomogeneous $G_{2}$ braneworld cosmologies presented recently; i.e., that isotropization towards the ${\cal F}_b$ model occurs for $\gamma > 4/3$.
Bruni Marco
Coley Alan
Dunsby Peter K. S.
Goheer Naureen
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