Constraining Lorentz violation with cosmology

Details Constraining Lorentz violation with cosmology Constraining Lorentz violation with cosmology

2008-08-13

arxiv.org/abs/0808.1824v1

Phys.Rev.Lett.101:261102,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.101.261102

The Einstein-Aether theory provides a simple, dynamical mechanism for breaking Lorentz invariance. It does so within a generally covariant context and may emerge from quantum effects in more fundamental theories. The theory leads to a preferred frame and can have distinct experimental signatures. In this letter, we perform a comprehensive study of the cosmological effects of the Einstein-Aether theory and use observational data to constrain it. Allied to previously determined consistency and experimental constraints, we find that an Einstein-Aether universe can fit experimental data over a wide range of its parameter space, but requires a specific rescaling of the other cosmological densities.

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