Bulk scalar field in DGP braneworld cosmology

被引：0
|
作者：
ul Haq Ansari, Rizwan [1 ]
Suresh, P. K. [1 ]
机构：
[1] Univ Hyderabad, Sch Phys, Hyderabad 500 046, Andhra Pradesh, India
来源：
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2007年 / 09期
关键词：
cosmology with extra dimensions; cosmological applications of theories with extra dimensions;
D O I：
10.1088/1475-7516/2007/09/021
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigated the effects of bulk scalar field in the braneworld cosmological scenario. The Friedmann equations and acceleration condition in the presence of the bulk scalar field for a zero tension brane and cosmological constant are studied. In the DGP model the effective Einstein equation on the brane is obtained with a bulk scalar field. The rescaled bulk scalar. field on the brane in the DGP model behaves as an effective four-dimensional. field, thus standard type cosmology is recovered. In the present study of the DGP model, the late-time accelerating phase of the universe can be explained.
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页数：10
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