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Thermodynamical properties of apparent horizon in warped DGP braneworld
Sheykhi, Ahmad; Bin Wang; Cai, Rong-Gen; Wang, B , Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China
2007
发表期刊NUCLEAR PHYSICS B
ISSN0550-3213
卷号779期号:40910页码:1-12
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.
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
关键词Gravitational Constant Cosmological Constant Friedmann Equation Cardy Formula 1st Law Gravity Universes Breaking Bulk
学科领域Physics
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收录类别SCI
WOS记录号WOS:000248995600001
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被引频次:149[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/311006/5663
专题理论物理所SCI论文
通讯作者Wang, B , Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China
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Sheykhi, Ahmad,Bin Wang,Cai, Rong-Gen,et al. Thermodynamical properties of apparent horizon in warped DGP braneworld[J]. NUCLEAR PHYSICS B,2007,779(40910):1-12.
APA Sheykhi, Ahmad,Bin Wang,Cai, Rong-Gen,&Wang, B , Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China.(2007).Thermodynamical properties of apparent horizon in warped DGP braneworld.NUCLEAR PHYSICS B,779(40910),1-12.
MLA Sheykhi, Ahmad,et al."Thermodynamical properties of apparent horizon in warped DGP braneworld".NUCLEAR PHYSICS B 779.40910(2007):1-12.
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