Cosmological braneworld solutions with bulk scalar field in DGP setup

被引：10
|
作者：
Nozari, Kourosh [1 ]
Khamesian, M. [1 ]
Rashidi, N. [1 ]
机构：
[1] Univ Mazandaran, Dept Phys, Fac Basic Sci, Babol Sar, Iran
来源：
ASTROPARTICLE PHYSICS | 2012年 / 35卷 / 12期
关键词：
Braneworld cosmology; Induced gravity; Bulk scalar field; Supergravity and superpotentials; SUPERGRAVITY; MODELS;
D O I：
10.1016/j.astropartphys.2012.02.012
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：828 / 838
页数：11
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