Couplings varying on cosmological scales and Lorentz breaking
High Energy Physics - Phenomenology
2009-11-10 v1
Abstract
In the context of N=4 supergravity in four dimensions, we present an exact classical solution that leads to spacetime-dependent electromagnetic couplings and discuss the ensuing Lorentz-violating effects. We comment briefly on experimental bounds.
Cite
@article{arxiv.hep-ph/0311073,
title = {Couplings varying on cosmological scales and Lorentz breaking},
author = {Ralf Lehnert},
journal= {arXiv preprint arXiv:hep-ph/0311073},
year = {2009}
}
Comments
10 pages, 1 figure, invited talk presented at the Coral Gables Meeting, December 2002