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题名: Notes on entropy force in general spherically symmetric spacetimes
作者: 蔡荣根 ;  Cao, Li-Ming ;  Ohta, Nobuyoshi
刊名: PHYSICAL REVIEW D
出版日期: 2010
卷号: 81, 期号:8, 页码:-
关键词: BLACK-HOLE EVAPORATION ;  APPARENT HORIZON ;  FIELD-EQUATIONS ;  THERMODYNAMIC BEHAVIOR ;  1ST LAW ;  BRANEWORLD ;  GRAVITY
学科分类: Physics
通讯作者: Cai, RG , Chinese Acad Sci, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China
部门归属: [Cai, RG] Chinese Acad Sci, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China; [Cao, LM; Ohta, N] Kinki Univ, Dept Phys, Osaka 5778502, Japan
英文摘要: In a recent paper [arXiv:1001.0785], Verlinde has shown that the Newton gravity appears as an entropy force. In this paper we show how gravity appears as entropy force in Einstein's equation of gravitational field in a general spherically symmetric spacetime. We mainly focus on the trapping horizon of the spacetime. We find that when matter fields are absent, the change of entropy associated with the trapping horizon indeed can be identified with an entropy force. When matter fields are present, we see that heat flux of matter fields also leads to the change of entropy. Applying arguments made by Verlinde and Smolin, respectively, to the trapping horizon, we find that the entropy force is given by the surface gravity of the horizon. The cases in the untrapped region of the spacetime are also discussed.
资助者: NSFC, China[10821504, 10975168]; Ministry of Science and Technology of China national basic research[2010CB833004]; JSPS[20540283, 21.09225]; Japan-U. K. Research Cooperative Program
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000277205000067
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5123
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Cai, Rong-Gen,Cao, Li-Ming,Ohta, Nobuyoshi. Notes on entropy force in general spherically symmetric spacetimes[J]. PHYSICAL REVIEW D,2010,81(8):-.
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