Cosmological braneworld solutions with bulk scalar field in DGP setup

► Cosmological dynamics with bulk scalar field in the DGP setup is obtained. ► Bulk-brane energy–momentum transfer is studied fully. ► Super-gravity style solutions are presented. ► Singularities in the bulk are investigated. ► There is no singularity with bounded super-potentials. We study cosmolog...

Full description

Saved in:
Bibliographic Details
Published inAstroparticle physics Vol. 35; no. 12; pp. 828 - 838
Main Authors Nozari, Kourosh, Khamesian, M., Rashidi, N.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.07.2012
Subjects
Braneworld cosmology
Bulk scalar field
Induced gravity
Supergravity and superpotentials
Bulk scalar field
Induced gravity
Supergravity and superpotentials
Braneworld cosmology
Online AccessGet full text

Cover

More Information
Summary:► Cosmological dynamics with bulk scalar field in the DGP setup is obtained. ► Bulk-brane energy–momentum transfer is studied fully. ► Super-gravity style solutions are presented. ► Singularities in the bulk are investigated. ► There is no singularity with bounded super-potentials. 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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0927-6505
1873-2852
DOI:10.1016/j.astropartphys.2012.02.012