Brane-world cosmological perturbations: a covariant approach
arXiv:gr-qc/0304089 · doi:10.1143/PTPS.148.213
Abstract
The standard cosmological model, based on general relativity with an inflationary era, is very effective in accounting for a broad range of observed features of the universe. However, the ongoing puzzles about the nature of dark matter and dark energy, together with the problem of a fundamental theoretical framework for inflation, indicate that cosmology may be probing the limits of validity of general relativity. The early universe provides a testing ground for theories of gravity, since gravitational dynamics can lead to characteristic imprints on the CMB and other cosmological observations. Precision cosmology is in principle a means to constrain and possibly falsify candidate quantum gravity theories like M theory. Generalized Randall-Sundrum brane-worlds provide a phenomenological means to test aspects of M theory. I outline the 1+3-covariant approach to cosmological perturbations in these brane-worlds, and its application to CMB anisotropies.
arXiv commentBased on a talk at the Brane-world Gravity Workshop, Yukawa Institute, Jan 2002. 17 pages, 4 figures
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- Collision of Domain Walls and Reheating of the Brane Universe
- Cosmological evolution of general scalar fields in a brane-world cosmology
- Spherically symmetric problem on the brane and galactic rotation curves
- First and Second Order Perturbations of Hypersurfaces
- Cosmic Mimicry: Is LCDM a Braneworld in Disguise ?
- Collision of Domain Walls in asymptotically Anti de Sitter spacetime
- Structure formation on the brane: A mimicry
- A New Fate of a Warped 5D FRW Model with a U(1) Scalar Gauge Field
- Linearized gravity on the Randall-Sundrum two-brane background with curvature terms in the action for the branes
- Features of warped geometry in presence of Gauss-Bonnet coupling
- Rotational Perturbations of High Density Matter in the Brane Cosmology
- Gravitational instability on the brane: the role of boundary conditions
- Asymmetric Swiss-cheese brane-worlds
- Cosmological perturbations of an expanding brane in an anti-de Sitter bulk: a short review
- Brane cosmology, Weyl fluid, and density perturbations