Angular momentum in general relativity: The definition at null infinity includes the spatial definition as a special case

Anthony Rizzi
Phys. Rev. D 63, 104002 – Published 4 April 2001
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Abstract

I show that the definition of angular momentum at null infinity given by A. Rizzi, Phys. Rev. Lett. 81, 1150 (1998), reduces to the Arnowitt-Deser-Misner definition at spatial infinity in the appropriate limit. This identification reinforces the gauge condition of the null definition as well as the null definition itself. Insight into the place of the null and spatial definitions is also gained. The methods used in this paper are very useful for understanding far-field problems in general relativity; a set of Appendixes gives details of the methods.

  • Received 7 February 2000

DOI:https://doi.org/10.1103/PhysRevD.63.104002

©2001 American Physical Society

Authors & Affiliations

Anthony Rizzi

  • California Institute of Technology, LIGO, Livingston, Louisiana 70754

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Vol. 63, Iss. 10 — 15 May 2001

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