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    Laser Ranging Delay in the Bi-Metric Theory of Gravity

    Kopeikin, Sergei M.
    Ni, Wei-Tou
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    [PDF] LaserRangingDelayBiMetric.pdf (127.7Kb)
    Date
    2006
    Format
    Article
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    Abstract
    We introduce a linearized bi-metric theory of gravity with two metrics. The metric g_{ab} describes null hypersurfaces of the gravitational field while light moves on null hypersurfaces of the optical metric \bar{g}_{ab}. Bi-metrism naturally arises in vector-tensor theories with matter being non-minimally coupled to gravity via long- range vector field. We derive explicit Lorentz-invariant solution for a light ray propagating in space-time of the bi-metric theory and disentangle relativistic effects associated with the two metrics. This anlysis can be valuable for future spaceborne laser missions ASTROD and LATOR dedicated to map various relativistic gravity parameters in the solar system to unparalleled degree of accuracy.
    URI
    http://hdl.handle.net/10355/6936
    Citation
    arXiv:gr-qc/0601071v2
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    • Physics and Astronomy publications (MU)

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