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Friedmann equations of FRW universe in scalar-tensor gravity, f(R) gravity and first law of thermodynamics
Akbar, M; Cai, RG; Cai, RG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
2006
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号635期号:1页码:7-10
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.
部门归属Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Black-hole Entropy Horizons
学科领域Physics
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收录类别SCI
WOS记录号WOS:000236483100002
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被引频次:213[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/6017
专题理论物理所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
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Akbar, M,Cai, RG,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 Akbar, M,Cai, RG,&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 Akbar, M,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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