Vacuum solutions of a gravity model with vector-induced spontaneous Lorentz symmetry breaking
Abstract
We study the vacuum solutions of a gravity model where Lorentz symmetry is spontaneously broken once a vector field acquires a vacuum expectation value. Results are presented for the purely radial Lorentz symmetry breaking (LSB), radial/temporal LSB and axial/temporal LSB. The purely radial LSB result corresponds to new black hole solutions. When possible, parametrized post-Newtonian parameters are computed and observational boundaries used to constrain the Lorentz symmetry breaking scale.
- Publication:
-
Physical Review D
- Pub Date:
- August 2005
- DOI:
- 10.1103/PhysRevD.72.044001
- arXiv:
- arXiv:hep-th/0504215
- Bibcode:
- 2005PhRvD..72d4001B
- Keywords:
-
- 04.25.Nx;
- 11.30.Cp;
- 11.30.Qc;
- Post-Newtonian approximation;
- perturbation theory;
- related approximations;
- Lorentz and Poincare invariance;
- Spontaneous and radiative symmetry breaking;
- High Energy Physics - Theory
- E-Print:
- 12 pages, 2 figures