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Static post-Newtonian equivalence of GR and gravity with a dynamical preferred frame

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arxiv gr-qc/0310044 v3 pith:P6YNEJ3U submitted 2003-10-07 gr-qc astro-phhep-th

classification gr-qcastro-phhep-th
keywords dynamicalfieldparameterspost-newtonianstaticasymptoticcasecoefficients
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A generally covariant extension of general relativity (GR) in which a dynamical unit timelike vector field is coupled to the metric is studied in the asymptotic weak field limit of spherically symmetric static solutions. The two post-Newtonian parameters known as the Eddington-Robertson-Schiff parameters are found to be identical to those in the case of pure GR, except for some non-generic values of the coefficients in the Lagrangian.

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  1. Compact binary systems in Einstein-{\AE}ther gravity. II. Radiation reaction to 2.5 post-Newtonian order

    gr-qc 2025-06 conditional novelty 7.0 of 10

    The paper derives radiative equations of motion for Einstein-Aether compact binaries to 2.5PN order and reports energy-loss rates that contradict earlier flux-based calculations, with the dipole rate depending only on...

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