Post-Newtonian parameters and constraints on Einstein-aether theory

Details Post-Newtonian parameters and constraints on Einstein-aether theory Post-Newtonian parameters and constraints on Einstein-aether theory

2005-09-20

arxiv.org/abs/gr-qc/0509083v2

Phys.Rev. D73 (2006) 064015

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

19 pages; v2: corrected typos

Scientific paper

10.1103/PhysRevD.73.064015

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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