Cosmic Microwave Radiation Anisotropies in Brane Worlds
arXiv:astro-ph/0303108 · doi:10.1103/PhysRevLett.91.221301
Abstract
We propose a new formulation to calculate the Cosmic Microwave Background (CMB) spectrum in the Randall Sundrum two-branes model based on recent progresses in solving the bulk geometry using a low energy approximation. The evolution of the anisotropic stress imprinted on the brane by the 5D Weyl tensor is calculated. An impact of the dark radiation perturbation on CMB spectrum is investigated in a simple model assuming an initially scale-invariant adiabatic perturbations. The dark radiation perturbation induces isocurvature perturbations, but the resultant spectrum can be quite different from the prediction of simple mixtures of adiabatic and isocurvature perturbations due to Weyl anisotropic stress.
4 pages, 1 figure
References in corpus (6)
- Radion and Holographic Brane Gravity
- Low energy effective theory for two branes system
- Strong Brane Gravity and the Radion at Low Energies
- Observational Consequences of Evolution of Primordial Fluctuations in Scalar-Tensor Cosmology
- Radion and Large Scale Anisotropy on the Brane
- Brane-world cosmological perturbations: a covariant approach
Cited by in corpus (37)
- Inflation Dynamics and Reheating
- Brane-World Gravity
- Brane-world gravity
- Brane World Cosmology
- Slow-roll parameters in braneworld cosmologies
- Constraints on braneworld inflation from CMB anisotropies
- Observational constraints on braneworld inflation: the effect of a Gauss-Bonnet term
- Is the radion a chameleon?
- Scalar perturbations from brane-world inflation
- Brane with variable tension as a possible solution to the problem of the late cosmic acceleration
- Decoding signatures of extra dimensions and estimating spin of quasars from the continuum spectrum
- Observing braneworld black holes
- Non-Gaussianity in braneworld and tachyon inflation
- The spectrum of gravitational waves in Randall-Sundrum braneworld cosmology
- Late time behavior of cosmological perturbations in a single brane model
- Constraints on scalar and tensor perturbations in phenomenological and two-field inflation models: Bayesian evidences for primordial isocurvature and tensor modes
- Cosmological tensor perturbations in the Randall-Sundrum model: evolution in the near-brane limit
- A note on the wellposedness of scalar brane world cosmological perturbations
- Generation of Curvature Perturbations with Extra Anisotropic Stress
- Quantum-mechanical generation of gravitational waves in braneworld
- Low Energy Branes, Effective Theory and Cosmology
- Quantization of scalar perturbations in brane-world inflation
- Does black hole continuum spectrum signal f(R) gravity in higher dimensions?
- Beyond the Low Energy Approximation in Braneworld Cosmology
- Bulk gravitational field and dark radiation on the brane in dilatonic brane world
- Degeneracy of consistency equations in braneworld inflation
- Leading order corrections to the cosmological evolution of tensor perturbations in braneworld
- Linearized Israel Matching Conditions for Cosmological Perturbations in a Moving Brane Background
- Testing Short Distance Anisotropy in Space
- AdS/CFT on the brane
- Cosmological Perturbations During Radion Stabilization
- Dynamical modelling of disc vertical structure in superthin galaxy `UGC 7321' in braneworld gravity: An MCMC study
- Derivation of the deformed Heisenberg algebra from discrete spacetime
- CMB Constraint on Radion Evolution in the Brane World Scenario
- Scalar cosmological perturbations in the Gauss-Bonnet braneworld
- Novel setup for detecting short-range anisotropic corrections to gravity
- General perturbations in D+1 standard and brane cosmology revisited