Angular momentum and memory effect

被引:6
作者
Mao, Pujian [1 ,2 ]
Wu, Jun-Bao [1 ,2 ,5 ]
Wu, Xiaoning [3 ,4 ,6 ]
机构
[1] Tianjin Univ, Sch Sci, Ctr Joint Quantum Studies, 135 Yaguan Rd, Tianjin 300350, Peoples R China
[2] Tianjin Univ, Sch Sci, Dept Phys, 135 Yaguan Rd, Tianjin 300350, Peoples R China
[3] Chinese Acad Sci, Inst Math, Acad Math & Syst Sci, 55 Zhongguancun East Rd, Beijing 100190, Peoples R China
[4] Chinese Acad Sci, Hua Loo Keng Key Lab, 55 Zhongguancun East Rd, Beijing 100190, Peoples R China
[5] Peng Huanwu Ctr Fundamental Theory, Hefei 230026, Anhui, Peoples R China
[6] Univ Chinese Acad Sci, Sch Math Sci, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
GRAVITATIONAL-WAVE BURSTS; GENERAL-RELATIVITY; CONSERVED QUANTITIES; LINKAGES;
D O I
10.1103/PhysRevD.107.L101501
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
It is a long-standing problem in general relativity that the notion of angular momentum of an isolated system has supertranslation ambiguity. In this paper, we argue that the ambiguity is essentially because of the gravitational wave memory. When properly subtracting the memory effect of the observer, one can introduce a supertranslation invariant definition of the angular momentum at null infinity even for dynamical process.
引用
收藏
页数:7
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