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Thermodynamic behavior of field equations for f (R) gravity
文献类型：期刊论文
| 作者 | Akbar, M.; Cai, Rong-Gen ; Akbar, M , 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 | 2007 |
| 卷号 | 648期号:40942页码:243-248 |
| 关键词 | Cardy-verlinde Formula Black-holes Particle Creation Desitter Spaces 1st Law Horizons Entropy |
| ISSN号 | 0370-2693 |
| 英文摘要 | Recently it has shown that Einstein's field equations can be rewritten into a form of the first law of thermodynamics at apparent horizon of Friedmann-Robertson-Walker (FRW) universe, which indicates intrinsic thermodynamic properties of apparent horizon of spacetime. In the present Letter we deal with the so-called f(R) gravity, whose action is a function of the curvature scalar R. In the setup of FRW universe, we show that the field equations can also be cast to a similar form, dE = T dS + WdV + T dS, at the apparent horizon, where W = (rho = P)/2, E is the energy of perfect fluid with energy density p and pressure P inside the apparent horizon. T and S = Af'(R)/4G are temperature and entropy associated with the apparent horizon, respectively. Compared to the case of Einstein's general relativity, an additional term dS appears here. The appearance of the additional term is consistent with the argument recently given by Eling et al. [C. Eling, R. Guedens, T. Jacobson, Phys. Rev. Lett. 96 (2006) 121301, gr-qc/0602001] that the horizon thermodynamics is non-equilibrium one for the f (R) gravity. (C) 2007 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000246332600021 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5734]  |
| 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 | Akbar, M , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Akbar, M.,Cai, Rong-Gen,Akbar, M , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China. Thermodynamic behavior of field equations for f (R) gravity[J]. PHYSICS LETTERS B,2007,648(40942):243-248. |
| APA | Akbar, M.,Cai, Rong-Gen,&Akbar, M , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.(2007).Thermodynamic behavior of field equations for f (R) gravity.PHYSICS LETTERS B,648(40942),243-248. |
| MLA | Akbar, M.,et al."Thermodynamic behavior of field equations for f (R) gravity".PHYSICS LETTERS B 648.40942(2007):243-248. |
入库方式： OAI收割
来源：理论物理研究所
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