Supercentre of mass system at future null infinity

Details Supercentre of mass system at future null infinity Supercentre of mass system at future null infinity

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988cqgra...5..423m&link_type=abstract

Classical and Quantum Gravity (ISSN 0264-9381), vol. 5, March 1, 1988, p. 423-435.

Physics

10

Gravitation Theory, Lorentz Transformations, Minkowski Space, Angular Momentum, Asymptotic Properties, Convergence

Scientific paper

The possibility of eliminating the supertranslation gauge freedom at scri via the introduction of a unique set of sections which provide a center of mass system of reference is explored. The present construction depends on the properties of the physical system at the fixed retarded time defined by these sections. A new definition of 'nice' sections at null infinity is defined by imposing the conditions on the supermomentum of Geroch and Winicour (1981). The local existence of a family of 'nice' sections around the original one is established for an asymptotically flat radiating spacetime under certain conditions.

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