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Zbl 1136.83316
Dray, Tevian; Streubel, Michael
Angular momentum at null infinity. (English)
[J] Classical Quantum Gravity 1, 15-26 (1984). ISSN 0264-9381; ISSN 1361-6382/e

Summary: The definition of angular momentum recently given by {\it R. Penrose} [Proc. R. Soc. Lond. Ser. A 381, No. 1780, 53--63 (1982)] is analysed on $I$. It is shown that this definition is essentially a supertranslation of previous definitions [for example, the one by Streubel in Gen. Relativity Gravitation 9, No. 6, 551--561 (1978)]. The origin dependence of Penrose's angular momentum is shown to have the correct form. Based on Penrose's expression, the authors then define a momentum for all elements of the BMS Lie algebra, which is the first such expression with the property that its flux vanishes identically in Minkowski space.

MSC 2000:: *83C30 Asymptotic procedures (general relativity)
83C40 Groups of motions, etc.

Cited in: Zbl 1136.83317

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