Detectability of a phantom-like braneworld model with the integrated Sachs-Wolfe effect
arXiv:0803.2238 · doi:10.1103/PhysRevD.78.044017
Abstract
We study a braneworld model in which a phantom-like behaviour occurs with only cold dark matter and a cosmological constant, due to a large distance modification of gravity. With the addition of curvature, the geometrical tests are not strict enough to rule out models in which gravity is modified significantly on large scales. We show that this degeneracy in the parameter space is broken by the structure formation tests, such as the integrated Sachs-Wolfe effect, which can probe general relativity on large scales.
7 pages, 4 figures
References in corpus (10)
- Measuring the Baryon Acoustic Oscillation scale using the SDSS and 2dFGRS
- Large Scale Structure as a Probe of Gravitational Slip
- Combined analysis of the integrated Sachs-Wolfe effect and cosmological implications
- Ghosts in the self-accelerating universe
- Constraining dark energy with cross-correlated CMB and Large Scale Structure data
- Non-linear interactions in a cosmological background in the DGP braneworld
- Cosmological perturbations in the DGP braneworld: numeric solution
- UV stable, Lorentz-violating dark energy with transient phantom era
- Galaxy-CMB Cross-Correlation as a Probe of Alternative Models of Gravity
- Large Scale Structure Formation of Normal Branch in DGP Brane World Model