Constraining Lorentz violation with cosmology
General Relativity and Quantum Cosmology
2009-01-22 v1 Astrophysics
High Energy Physics - Theory
Abstract
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.
Cite
@article{arxiv.0808.1824,
title = {Constraining Lorentz violation with cosmology},
author = {J. A. Zuntz and P. G. Ferreira and T. G. Zlosnik},
journal= {arXiv preprint arXiv:0808.1824},
year = {2009}
}
Comments
4 pages, 4 figures