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Yang, RQ; Ruan, SM; Yang, RQ (reprint author), Korea Inst Adv Study, Quantum Univ Ctr, Seoul 130722, South Korea.
Comments on joint terms in gravitational action
发表期刊CLASSICAL AND QUANTUM GRAVITY
语种英语
关键词Action In Gravity Theory Joint Terms Piecewise Smooth Boundary
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.
2017
卷号34期号:17页码:175017
学科领域Astronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1088/1361-6382/aa8053
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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SCI期刊论文
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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