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arxiv: 1108.1835 · v1 · submitted 2011-08-09 · 🌀 gr-qc · hep-th

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A positive energy theorem for Einstein-aether and Hov{r}ava gravity

David Garfinkle , Ted Jacobson
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classification 🌀 gr-qc hep-th
keywords solutionsclasseinstein-aetherenergygravitysurfaceaethercertain
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Energy positivity is established for a class of solutions to Einstein-aether theory and the IR limit of Ho\v{r}ava gravity within a certain range of coupling parameters. The class consists of solutions where the aether 4-vector is divergence free on a spacelike surface to which it is orthogonal (which implies that the surface is maximal). In particular, this result holds for spherically symmetric solutions at a moment of time symmetry.

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  1. Constraints on Einstein-aether gravity from the precision timing of PSR J1738+0333

    gr-qc 2026-05 unverdicted novelty 4.0

    Precision timing of PSR J1738+0333 from EPTA and NANOGrav data yields the tightest strong-field constraints on Einstein-aether parameters from any single binary pulsar.