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BIANCHI TYPE-I COSMOLOGICAL MODELS IN HIGHER DIMENSIONS

被引：28
|
作者：
BANERJEE, A
BHUI, B
CHATTERJEE, S
机构：
[1] Gen. Relativity and Cosmology Centre, Department of Physics
[2] Department of Physics, Jadavpur University
[3] Department of Physics, New Alipore College
来源：
ASTROPHYSICAL JOURNAL | 1990年 / 358卷 / 01期
关键词：
Cosmology;
D O I：
10.1086/168959
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In the present paper Krori and Barua's work on Bianchi type I solutions in (9 + 1)-dimensional spacetime has been extended for viscous as well as perfect fluid in general (D + 1) dimensions. The Hubble functions are expressed in terms of the ratio (σ2/θ2), and explicit solutions are obtained in several special cases for viscous fluid involving both bulk and shear viscosities. The perfect fluid with the equation of state p = p is also discussed in (D + 1) dimensions and is found to have properties of dimensional reduction analogous to those in vacuum found by Krori and Barua. It is further observed that effective four-dimensional entropy would considerably increase if rapid contraction of extra dimensions takes place.
引用
收藏
页码：23 / 27
页数：5
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