Cosmological perturbations in the DGP braneworld: numeric solution

Antonio Cardoso, Kazuya Koyama, S. Seahra, F. Silva

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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.
Original languageEnglish
Pages (from-to)083512
Number of pages1
JournalPhysical Review D
Issue number8
Publication statusPublished - 2008


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