Cosmological particle production in five-dimensional Kaluza-Klein theory

被引：25
|
作者：
Mak, MK [1 ]
Harko, T [1 ]
机构：
[1] Univ Hong Kong, Dept Phys, Hong Kong, Peoples R China
来源：
CLASSICAL AND QUANTUM GRAVITY | 1999年 / 16卷 / 12期
关键词：
D O I：
10.1088/0264-9381/16/12/323
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The five-dimensional induced-matter theory is reformulated to describe matter and entropy creation in the very early Universe, in the presence of a variable speed of light and gravitational constant. The five-dimensional vacuum field equations induce a four-dimensional cosmological fluid with the particle creation rate being determined by the time variation rate of the metric tensor component of the fifth dimension. For a homogeneous and isotropic flat Friedmann-Robertson-Walker geometry exact analytical solutions of the five-dimensional gravitational field equations are obtained, leading to a self-consistent cosmological model describing matter and entropy generation from the extra dimensions.
引用
收藏
页码：4085 / 4099
页数：15
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