Work

Cosmological perturbations in the DGP braneworld: Numeric solution

Year: 2008

Type: article

Abstract: We solve for the behavior 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 behavior 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.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.77.083512

Authors: Antonio Cardoso, Kazuya Koyama, Sanjeev S. Seahra, Fabio P. Silva

Institutions: University of Portsmouth, University of New Brunswick

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Natural Sciences and Engineering Research Council of Canada, Science and Technology Facilities Council, Fundação para a Ciência e a Tecnologia

Awards: DARK ENERGY AND MODIFIED GRAVITY, G399266159, FÍSICA DE PARTÍCULAS E COSMOLOGIA