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Friedmann equations of FRW universe in scalar-tensor gravity, f(R) gravity and first law of thermodynamics
文献类型：期刊论文
| 作者 | Cai, RG ; Akbar, M; Cai, RG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
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| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2006 |
| 卷号 | 635期号:1页码:7-10 |
| 关键词 | Black-hole Entropy Horizons |
| ISSN号 | 0370-2693 |
| 英文摘要 | In the paper, [R.G. Cai, S.P. Kim, JHEP 0502 (2005) 050. hep-th/0501055], it is shown that by applying the first law of thermodynamics to the apparent horizon of an FRW universe and assuming the geometric entropy given by a quarter of the apparent horizon area, one can derive the Friedmann equations describing the dynamics of the universe with any spatial curvature; using the entropy formula for the static spherically symmetric black holes in Gauss-Bonnet gravity and in more general Lovelock gravity, where the entropy is not proportional to the horizon area, one can also obtain the corresponding Friedmann equations in each gravity. In this Letter we extend the study of the above mentioned paper to the cases of scalar-tensor gravity and f (R) gravity, and discuss the implication of results. (c) 2006 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000236483100002 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/6017]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Cai, RG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, RG,Akbar, M,Cai, RG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China. Friedmann equations of FRW universe in scalar-tensor gravity, f(R) gravity and first law of thermodynamics[J]. PHYSICS LETTERS B,2006,635(1):7-10. |
| APA | Cai, RG,Akbar, M,&Cai, RG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.(2006).Friedmann equations of FRW universe in scalar-tensor gravity, f(R) gravity and first law of thermodynamics.PHYSICS LETTERS B,635(1),7-10. |
| MLA | Cai, RG,et al."Friedmann equations of FRW universe in scalar-tensor gravity, f(R) gravity and first law of thermodynamics".PHYSICS LETTERS B 635.1(2006):7-10. |
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来源：理论物理研究所
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