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arXiv · 1108.1835

A positive energy theorem for Einstein-aether and Hořava gravity

David Garfinkle·Ted Jacobson
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Abstract

Energy positivity is established for a class of solutions to Einstein-aether theory and the IR limit of Hořava 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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David Garfinkle, Ted Jacobson. 2011-08-09. A positive energy theorem for Einstein-aether and Hořava gravity. https://doi.org/10.1103/physrevlett.107.191102

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