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题名: Thermodynamical properties of apparent horizon in warped DGP braneworld
作者: Sheykhi, Ahmad ;  Bin Wang ;  蔡荣根
刊名: NUCLEAR PHYSICS B
出版日期: 2007
卷号: 779, 期号:40910, 页码:1-12
关键词: GRAVITATIONAL CONSTANT ;  COSMOLOGICAL CONSTANT ;  FRIEDMANN EQUATION ;  CARDY FORMULA ;  1ST LAW ;  GRAVITY ;  UNIVERSES ;  BREAKING ;  BULK
学科分类: Physics
通讯作者: Wang, B , Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China
部门归属: Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China; Shiraz Univ, Dept Phys, Shiraz 71454, Iran; Shiraz Univ, Biruni Observ, Shiraz 71454, Iran; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: In this paper we first obtain Friedmann equations for the (n - I)-dimensional brane embedded in the (n +1)-dimensional bulk, with intrinsic curvature term of the brane included in the action (DGP model). Then, we show that one can always rewrite the Friedmann equations in the form of the first law of thermodynamics, dE = T dS + W d V, at apparent horizon on the brane, regardless of whether there is the intrinsic curvature term on the brane or a cosmological constant in the bulk. Using the first law, we extract the entropy expression of the apparent horizon on the brane. We also show that in the case without the intrinsic curvature term, the entropy expressions are the same by using the apparent horizon on the brane and by using the bulk geometry. When the intrinsic curvature appears, the entropy of apparent horizon on the brane has two parts, one pail follows the n-climensional area formula on the brane, and the other part is the same as the entropy in the case without the intrinsic curvature term. As an interesting result, in the warped DGP model, the entropy expression in the bulk and on the brane are not the same. This is reasonable, since in this model gravity on the brane has two parts, one induced from the (n + I)-dimensional bulk gravity and the other due to the intrinsic curvature term on the brane. (c) 2007 Elsevier B.V. All rights reserved.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000248995600001
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内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5663
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:
Sheykhi, Ahmad,Bin Wang,Cai, Rong-Gen. Thermodynamical properties of apparent horizon in warped DGP braneworld[J]. NUCLEAR PHYSICS B,2007,779(40910):1-12.
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