Einstein-aether gravity: a status report
arXiv:0801.1547
Abstract
This paper reviews the theory, phenomenology, and observational constraints on the coupling parameters of Einstein-aether gravity, i.e. General Relativity coupled to a dynamical unit timelike vector field. A discussion of open questions concerning both phenomenology and fundamental issues is included.
18 pages, for the proceedings of the conference "From Quantum to Emergent Gravity: Theory and Phenomenology", June 11-15 2007, SISSA; Trieste, Italy; v.2: added brief comments on observability of wave speeds and polarizations, and how neutron star and black hole "sensitivities" might be computed
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