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Comments on joint terms in gravitational action
Yang, RQ; Ruan, SM; Yang, RQ (reprint author), Korea Inst Adv Study, Quantum Univ Ctr, Seoul 130722, South Korea.
2017
发表期刊CLASSICAL AND QUANTUM GRAVITY
卷号34期号:17页码:175017
文章类型Article
摘要This paper compares three different methods of computing joint terms in the on-shell action of gravity, which are identifying the joint term by the variational principle in the Dirichlet boundary condition, treating the joint term as the limit contribution of a smooth boundary and finding the joint term by local SO(1, d - 1) transformation. In general metric gravitational theory, we show that the differences between these joint terms are variational invariants under a fixed boundary condition. We also give an explicit condition to judge the existence of a joint term determined by the variational principle and apply it to general relativity as an example.
关键词Action In Gravity Theory Joint Terms Piecewise Smooth Boundary
学科领域Astronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1088/1361-6382/aa8053
关键词[WOS]BOUNDARIES ; GRAVITY ; NULL
语种英语
WOS类目Astronomy & Astrophysics ; Physics, Multidisciplinary ; Physics, Particles & Fields
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/21974
专题2017年知识产出
通讯作者Yang, RQ (reprint author), Korea Inst Adv Study, Quantum Univ Ctr, Seoul 130722, South Korea.
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Yang, RQ,Ruan, SM,Yang, RQ . Comments on joint terms in gravitational action[J]. CLASSICAL AND QUANTUM GRAVITY,2017,34(17):175017.
APA Yang, RQ,Ruan, SM,&Yang, RQ .(2017).Comments on joint terms in gravitational action.CLASSICAL AND QUANTUM GRAVITY,34(17),175017.
MLA Yang, RQ,et al."Comments on joint terms in gravitational action".CLASSICAL AND QUANTUM GRAVITY 34.17(2017):175017.
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