Phys. Rev. D 40, 3997–4010 (1989)Inevitable ambiguity in perturbation around flat space-timeReceived 7 June 1989; published in the issue dated 15 December 1989 Perturbation of general-relativistic predictions around flat geometry, in general, introduces inevitable ambiguity. The ambiguity reflects the geometrical nature of general relativity and is never a difficulty of it. We explain it by taking a concrete example of the radar-echo experiment. © 1989 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.40.3997
DOI:
10.1103/PhysRevD.40.3997
PACS:
04.20.Cv
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