Entropy of the isolated horizon from the surface term of gravitational action

doi:10.1088/0264-9381/31/19/195002

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	Zhang, CY; Tian, Y; Wu, XN; Zhang, SJ; Zhang, CY (reprint author), Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China.
	Entropy of the isolated horizon from the surface term of gravitational action
发表期刊	CLASSICAL AND QUANTUM GRAVITY
语种	英语
关键词	Vacuum Field-equations Initial Value-problem Geometry Gravity
摘要	Starting from the surface term of gravitational action, one can construct a Virasoro algebra with central extension, with which the horizon entropy can be derived using the Cardy formula. This approach provides a new routine for calculating and interpreting the horizon entropy. In this paper, we generalize this approach to a more general case, the isolated horizon, which contains non-stationary spacetimes beyond stationary ones. By imposing appropriate boundary conditions near the horizon, the full set of diffeomorphisms is restricted to a subset where the corresponding Noether charges form a Virasoro algebra with central extension. Then by using the Cardy formula, we can derive the entropy of the isolated horizon.
	2014
ISSN	0264-9381
卷号	31 期号:19 页码:195002
学科领域	Physics
DOI	10.1088/0264-9381/31/19/195002
收录类别	SCI
引用统计	被引频次：2[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/311006/15624
专题	理论物理所科研产出_SCI论文
通讯作者	Zhang, CY (reprint author), Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China.
推荐引用方式 GB/T 7714	Zhang, CY,Tian, Y,Wu, XN,et al. Entropy of the isolated horizon from the surface term of gravitational action[J]. CLASSICAL AND QUANTUM GRAVITY,2014,31(19):195002.
APA	Zhang, CY,Tian, Y,Wu, XN,Zhang, SJ,&Zhang, CY .(2014).Entropy of the isolated horizon from the surface term of gravitational action.CLASSICAL AND QUANTUM GRAVITY,31(19),195002.
MLA	Zhang, CY,et al."Entropy of the isolated horizon from the surface term of gravitational action".CLASSICAL AND QUANTUM GRAVITY 31.19(2014):195002.