A Reference for the Gravitational Hamiltonian Boundary Term

doi:10.6122/CJP.20150819

	A Reference for the Gravitational Hamiltonian Boundary Term
	Sun, Gang 1; Chen, Chiang-Mei 2,3; Liu, Jian-Liang 4; Nester, James M.2,3,5,6
刊名	CHINESE JOURNAL OF PHYSICS
	2015-11-01
卷号	53 期号:6 页码:9
ISSN号	0577-9073
DOI	10.6122/CJP.20150819
英文摘要	The Hamiltonian for physical systems and dynamic spacetime geometry generates the evolution of a spatial region along a vector field. It includes a boundary term which not only determines the value of the Hamiltonian, but also, via the boundary term in the variation of the Hamiltonian, the boundary conditions. The value of the Hamiltonian comes from its boundary term; it gives the quasi-local quantities: energy-momentum and angular-momentum/center-of-mass momentum. This boundary term depends not only on the dynamical variables but also on their reference values; these reference values determine the ground state the state having vanishing quasi-local quantities. Here our concern is with how to select on the quasi-local two-boundary the reference value. To determine the "best matched" reference metric and connection values for our preferred boundary term for Einstein's general relativity, we propose on the boundary two-surface (i) four dimensional isometric matching, and (ii) extremizing the value of the energy.
资助项目	Ministry of Science and Technology of the R.O.C.[NSC-101-2112-M-008-006] ; Ministry of Science and Technology of the R.O.C.[NSC 99-2112-M-008-005-MY3] ; Ministry of Science and Technology of the R.O.C.[MOST 102-2112-M-008-015-MY3] ; National Center of Theoretical Sciences (NCTS)
WOS研究方向	Physics
语种	英语
出版者	PHYSICAL SOC REPUBLIC CHINA
WOS记录号	WOS:000368248900008
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/21759]
专题	中国科学院数学与系统科学研究院
通讯作者	Sun, Gang
作者单位	1.Beijing Univ Technol, Inst Theoret Phys, Beijing 100124, Peoples R China 2.Natl Cent Univ, Dept Phys, Chungli 320, Taiwan 3.Natl Cent Univ, Ctr Math & Theoret Phys, Chungli 320, Taiwan 4.Chinese Acad Sci, Acad Math & Syst Sci, Morningside Ctr Math, Beijing 100190, Peoples R China 5.Natl Cent Univ, Grad Inst Astron, Chungli 320, Taiwan 6.Natl Taiwan Univ, Leung Ctr Cosmol & Particle Astrophys, Taipei 10617, Taiwan
推荐引用方式 GB/T 7714	Sun, Gang,Chen, Chiang-Mei,Liu, Jian-Liang,et al. A Reference for the Gravitational Hamiltonian Boundary Term[J]. CHINESE JOURNAL OF PHYSICS,2015,53(6):9.
APA	Sun, Gang,Chen, Chiang-Mei,Liu, Jian-Liang,&Nester, James M..(2015).A Reference for the Gravitational Hamiltonian Boundary Term.CHINESE JOURNAL OF PHYSICS,53(6),9.
MLA	Sun, Gang,et al."A Reference for the Gravitational Hamiltonian Boundary Term".CHINESE JOURNAL OF PHYSICS 53.6(2015):9.