Brane cosmology, Weyl fluid, and density perturbations
arXiv:0806.2505 · doi:10.1103/PhysRevD.78.043517
Abstract
We develop a technique to study relativistic perturbations in the generalised brane cosmological scenario, which is a generalisation of the multi-fluid cosmological perturbations to brane cosmology. The novelty of the technique lies in the inclusion of a radiative bulk which is responsible for bulk-brane energy exchange, and in turn, modifies the standard perturbative analysis to a great extent. The analysis involves a geometric fluid -- called the Weyl fluid -- whose nature and role have been studied extensively both for the empty bulk and the radiative bulk scenario. Subsequently, we find that this Weyl fluid can be a possible geometric candidate for dark matter in this generalised brane cosmological framework.
18 pages, 1 figure, accepted for publication in Phys.Rev.D
References in corpus (58)
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
- The Einstein Equations on the 3-Brane World
- Non-Baryonic Dark Matter - Observational Evidence and Detection Methods
- Brane-world gravity
- Braneworld models of dark energy
- Dynamics of Anti-de Sitter Domain Walls
- Cosmological dynamics on the brane
- Brane-world cosmology
- General brane cosmologies and their global spacetime structure
- Brane cosmology: an introduction
- Global structure of exact cosmological solutions in the brane world
- Brane-world creation and black holes
- Large-scale cosmological perturbations on the brane
- Radion and Holographic Brane Gravity
- Brane-world inflation without inflaton on the brane
- Confronting Braneworld Cosmology with Supernova data and Baryon Oscillations
- Cosmology of a brane radiating gravitons into the extra dimension
- Cosmological perturbations in the bulk and on the brane
- Density perturbations in the brane-world
- Kaluza-Klein anisotropy in the CMB
- Large Scale Structure in the SDSS DR1 Galaxy Survey
- Low energy effective theory for two branes system
- Large Scale Structure in the SDSS Galaxy Survey
- Generalized Friedmann branes
- Brane cosmology with a bulk scalar field
- Bouncing and cyclic universes from brane models
- Bulk gravitons from a cosmological brane
- Quantum Fluctuations of Bulk Inflaton in Inflationary Brane World
- Warped Spectroscopy: Localization of Frozen Bulk Modes
- Brane-bulk energy exchange : a model with the present universe as a global attractor
- Mirage effects on the brane
- Dynamics of radiating braneworlds
- Brane cosmological evolution with a general bulk matter configuration
- The Generalized Dark Radiation and Accelerated Expansion in Brane Cosmology
- Quantum fluctuations in brane-world inflation without inflaton on the brane
- (1+3) Covariant Dynamics of Scalar Perturbations in Braneworlds
- Braneworld Tensor Anisotropies in the CMB
- Viscous Brane Cosmology with a Brane-Bulk Energy Interchange Term
- Thermal Equilibration of Brane-Worlds
- Braneworld Dynamics of Inflationary Cosmologies with Exponential Potentials
- Braneworld gravitational collapse from a radiative bulk
- Radion and Large Scale Anisotropy on the Brane
- Brane-world cosmological perturbations: a covariant approach
- Density perturbations in a brane-world universe with dark radiation
- Are braneworlds born isotropic?
- Structure formation on the brane: A mimicry
- Is our Universe brany ?
- Asymmetric radiating brane-world
- Cosmology in a brane-universe
- The luminosity-redshift relation in brane-worlds: I. Analytical results
- Large-scale perturbations on the brane and the isotropy of the cosmological singularity
- The luminosity-redshift relation in brane-worlds: II. Confrontation with experimental data
- Isotropic singularity in inhomogeneous brane cosmological models
- Irradiated asymmetric Friedmann branes
- Bulk black holes radiating in non-Z_2 brane-world spacetimes
- Graviton Emission into Non-Z_2 Symmetric Brane World Spacetimes
- Cosmological tests of generalized RS brane-worlds with Weyl fluid
- Semi-transparent brane-worlds
Cited by in corpus (8)
- Brane-world stars with solid crust and vacuum exterior
- Finite-time Cosmological Singularities and the Possible Fate of the Universe
- Friedmann branes with variable tension
- Galactic rotation curves in brane world models
- Eötvös branes
- Covariant gravitational dynamics in 3+1+1 dimensions
- Generalized particle dynamics: modifying the motion of particles and branes
- Generalized particle dynamics in anti de Sitter spaces: A source for dark energy