Cosmological perturbations in the DGP braneworld: numeric solution
Astrophysics
2008-11-26 v2 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
We solve for the behaviour of cosmological perturbations in the Dvali-Gabadadze-Porrati (DGP) braneworld model using a new numerical method. Unlike some other approaches in the literature, our method uses no approximations other than linear theory and is valid on large scales. We examine the behaviour of late-universe density perturbations for both the self-accelerating and normal branches of DGP cosmology. Our numerical results can form the basis of a detailed comparison between the DGP model and cosmological observations.
Keywords
Cite
@article{arxiv.0711.2563,
title = {Cosmological perturbations in the DGP braneworld: numeric solution},
author = {Antonio Cardoso and Kazuya Koyama and Sanjeev S. Seahra and Fabio P. Silva},
journal= {arXiv preprint arXiv:0711.2563},
year = {2008}
}
Comments
Typos corrected, including a misprint in Eq. (34). 16 pages, 10 figures