Density perturbations in braneworld cosmology and primordial black holes
arXiv:1012.1199 · doi:10.1103/PhysRevD.83.023516
Abstract
We study, by numerical methods, the time evolution of scalar perturbations in radiation era of Randall-Sundrum braneworld cosmology. Our results confirm an existence of the enhancement of perturbation amplitudes (near horizon crossing), discovered recently. We suggest the approximate solution of equations of the perturbation theory in the high energy regime, which predicts that the enhancement factor is asymptotically constant, as a function of scale. We discuss the application of this result for the problem of primordial black hole production in braneworld cosmology.
12 pages, 8 figures
References in corpus (9)
- Tests of the Gravitational Inverse-Square Law below the Dark-Energy Length Scale
- Brane-World Gravity
- Improved constraints on non-Newtonian forces at 10 microns
- Induced gravitational wave background and primordial black holes
- Constraints on the Size of Extra Dimensions from the Orbital Evolution of Black-Hole X-Ray Binaries
- Constraints on the mass spectrum of primordial black holes and braneworld parameters from the high-energy diffuse photon background
- Mass spectrum of primordial black holes from inflationary perturbation in the Randall-Sundrum braneworld: a limit on blue spectra
- Scalar perturbations in braneworld cosmology
- Numerical study of curvature perturbations in a brane-world inflation at high-energies