Initial data for stationary space-times near space-like infinity

Details Initial data for stationary space-times near space-like infinity Initial data for stationary space-times near space-like infinity

2001-07-05

arxiv.org/abs/gr-qc/0107018v1

Class.Quant.Grav. 18 (2001) 4329-4338

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

LaTeX 2e, no figures, 12 pages

Scientific paper

10.1088/0264-9381/18/20/312

We study Cauchy initial data for asymptotically flat, stationary vacuum space-times near space-like infinity. The fall-off behavior of the intrinsic metric and the extrinsic curvature is characterized. We prove that they have an analytic expansion in powers of a radial coordinate. The coefficients of the expansion are analytic functions of the angles. This result allow us to fill a gap in the proof found in the literature of the statement that all asymptotically flat, vacuum stationary space-times admit an analytic compactification at null infinity. Stationary initial data are physical important and highly non-trivial examples of a large class of data with similar regularity properties at space-like infinity, namely, initial data for which the metric and the extrinsic curvature have asymptotic expansion in terms of powers of a radial coordinate. We isolate the property of the stationary data which is responsible for this kind of expansion.

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