Einstein-Aether Theory
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We review the status of "Einstein-Aether theory", a generally covariant theory of gravity coupled to a dynamical, unit timelike vector field that breaks local Lorentz symmetry. Aspects of waves, stars, black holes, and cosmology are discussed, together with theoretical and observational constraints. Open questions are stressed.
17 pages, to appear in the Deserfest proceedings (World Scientific)
17 pages, to appear in the Deserfest proceedings (World Scientific)