Phys. Rev. D 73, 064015 (2006) [9 pages]Post-Newtonian parameters and constraints on Einstein-aether theoryReceived 20 September 2005; revised 8 February 2006; published 15 March 2006 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-Čerenkov, 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. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.73.064015
DOI:
10.1103/PhysRevD.73.064015
PACS:
04.50.+h, 04.25.Nx, 04.80.Cc
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