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Can one detect a non-smooth null infinity?

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arxiv gr-qc/0108049 v1 pith:WBVLRTFJ submitted 2001-08-20 gr-qc

classification gr-qc
keywords infinitynulleffectsnaturenon-smoothorderprecessionsmoothness
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abstract

It is shown that the precession of a gyroscope can be used to elucidate the nature of the smoothness of the null infinity of an asymptotically flat spacetime (describing an isolated body). A model for which the effects of precession in the non-smooth null infinity case are of order $r^{-2}\ln r$ is proposed. By contrast, in the smooth version the effects are of order $r^{-3}$. This difference should provide an effective criterion to decide on the nature of the smoothness of null infinity.

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