Screening Vector Field Modifications of General Relativity
Cosmology and Nongalactic Astrophysics
2013-10-31 v2 General Relativity and Quantum Cosmology
Abstract
A screening mechanism for conformal vector-tensor modifications of general relativity is proposed. The conformal factor depends on the norm of the vector field and makes the field to vanish in high dense regions, whereas drives it to a non-null value in low density environments. Such process occurs due to a spontaneous symmetry breaking mechanism and gives rise to both the screening of fifth forces as well as Lorentz violations. The cosmology and local constraints are also computed.
Cite
@article{arxiv.1212.1923,
title = {Screening Vector Field Modifications of General Relativity},
author = {Jose Beltrán Jiménez and André Luís Delvas Fróes and David F. Mota},
journal= {arXiv preprint arXiv:1212.1923},
year = {2013}
}
Comments
10 pages, 4 figures, revised version, to be published in PLB