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Article Dans Une Revue Modern Physics Letters B Année : 2017

The memory effect for plane gravitational waves

Résumé

We give an account of the gravitational memory effect in the presence of the exact plane wave solution of Einstein’s vacuum equations. This allows an elementary but exact description of the soft gravitons and how their presence may be detected by observing the motion of freely falling particles. The theorem of Bondi and Pirani on caustics (for which we present a new proof) implies that the asymptotic relative velocity is constant but not zero, in contradiction with the permanent displacement claimed by Zel’dovich and Polnarev. A non-vanishing asymptotic relative velocity might be used to detect gravitational waves through the “velocity memory effect”, considered by Braginsky, Thorne, Grishchuk, and Polnarev.
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Dates et versions

hal-01574849 , version 1 (24-04-2018)

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P.-M. Zhang, Christian Duval, G.W. Gibbons, P.A. Horvathy. The memory effect for plane gravitational waves. Modern Physics Letters B, 2017, 772, pp.743 - 746. ⟨10.1016/j.physletb.2017.07.050⟩. ⟨hal-01574849⟩
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