Emergence of space and the general dynamic equation of the Friedmann-Robertson-Walker universe

被引：16
|
作者：
Ai, Wen-Yuan [1 ]
Hu, Xian-Ru [1 ]
Chen, Hua [1 ]
Deng, Jian-Bo [1 ]
机构：
[1] Lanzhou Univ, Inst Theoret Phys, Lanzhou 730000, Peoples R China
来源：
PHYSICAL REVIEW D | 2013年 / 88卷 / 08期
关键词：
ENTROPY;
D O I：
10.1103/PhysRevD.88.084019
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A novel idea-that the cosmic acceleration can be understood from the perspective that spacetime dynamics is an emergent phenomenon-was proposed by T. Padmanabhan. The Friedmann equations of a Friedmann-Robertson-Walker universe can be derived from different gravity theories with different modifications of Padmanabhan's proposal. In this paper, a unified formula is proposed, in which those modifications can be treated as special cases when the formula is applied to different universe radii. Furthermore, the dynamic equations of a Friedmann-Robertson-Walker universe in the f(R) theory and deformed Horava-Lifshitz theory are investigated. The results show the validity of our proposed formula.
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页数：6
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