Cosmological braneworld solutions with bulk scalar field in DGP setup

Abstract

We study cosmological dynamics of a canonical bulk scalar field in the DGP setup within a superpotential approach. We show that the normal branch of this DGP-inspired model realizes a late-time de Sitter expansion on the brane. We extend this study to the case that the bulk contains a phantom scalar field. Our detailed study in the supergravity-style analysis reveals some yet unexplored aspects of cosmological dynamics of bulk scalar field in the normal DGP setup. Some clarifying examples along with numerical analysis of the model parameter space are presented in each case.

29 pages, 12 figs, accepted for publication in Astroparticle Physics

References in corpus (7)

• Dynamics of dark energy
• Brane-World Gravity
• TASI Lectures on Extra Dimensions and Branes
• Crossing the phantom divide without phantom matter
• Braneworld models with a non-minimally coupled phantom bulk field: a simple way to obtain the -1-crossing at late times
• Brane Cosmology with a Non-Minimally Coupled Bulk-Scalar Field
• Bulk scalar field in brane-worlds with induced gravity inspired by the $\mathcal{L}(R)$ term

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• q-Deformed glueballs spectrum in AdS/QCD correspondence