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

页码：23 / 27

页数：5

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