Scalar perturbations in DGP braneworld cosmology

Details Scalar perturbations in DGP braneworld cosmology Scalar perturbations in DGP braneworld cosmology

2008-05-16

arxiv.org/abs/0805.2596v1

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure. Talk given at the "43rd Rencontres de Moriond", La Thuile (Val d'Aosta, Italy)

Scientific paper

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.

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