Cosmological equations and thermodynamics on apparent horizon in thick braneworld

Cosmological equations and thermodynamics on apparent horizon in thick braneworld
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厚膜世界表观地平线的宇宙学方程和热力学

DOI:
10.1007/s10714-010-0932-5
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发表时间:
2007-10
影响因子:
2.8
通讯作者:
Zhang, Peng-Ming
Zhang, Peng-Ming
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Wu, Shao-Feng;Yang, Guo-Hong;Zhang, Peng-Ming

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我们推导出了在存在两个曲率修正项的情况下,厚膜模型中宇宙演化的广义Friedmann方程:一个是来自膜上诱导引力的四维标量曲率,另一个是五维Gauss-Bonnet曲率项。我们发现了广义Friedmann方程在一定限度内的两个有效的四维约化,并证明了在厚膜世界的视视界上,这些约化而不是广义Friedmann方程可以改写为平衡热力学第一定律.
We derive the generalized Friedmann equation governing the cosmological evolution inside the thick brane model in the presence of two curvature correction terms: a four-dimensional scalar curvature from induced gravity on the brane, and a five-dimensional Gauss-Bonnet curvature term. We find two effective four-dimensional reductions of the generalized Friedmann equation in some limits and demonstrate that the reductions but not the generalized Friedmann equation can be rewritten as the first law of equilibrium thermodynamics on the apparent horizon of thick braneworld.
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