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Post-Newtonian parameters and constraints on Einstein-aether theory

Brendan Z. Foster·Ted Jacobson
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Abstract

We analyze the observational and theoretical constraints on ``Einstein-aether theory", a generally covariant theory of gravity coupled to a dynamical, unit, timelike vector field that breaks local Lorentz symmetry. The results of a computation of the remaining post-Newtonian parameters are reported. These are combined with other results to determine the joint post-Newtonian, vacuum-Cerenkov, nucleosynthesis, stability, and positive-energy constraints. All of these constraints are satisfied by parameters in a large two-dimensional region in the four-dimensional parameter space defining the theory.

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Brendan Z. Foster, Ted Jacobson. 2006-02-08. Post-Newtonian parameters and constraints on Einstein-aether theory. https://doi.org/10.1103/physrevd.73.064015

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