76 citations · 189 across the 4 of their papers we have counts for
4 papers
Constraining Lorentz violation with cosmology
J. A. Zuntz, P. G. Ferreira, T. G. Zlosnik
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 effec…
On the growth of structure in theories with a dynamical preferred frame
T. G Zlosnik, P. G. Ferreira, G. D. Starkman
We study the cosmological stability of a class of theories with a dynamical preferred frame. For a range of actions, we find cosmological solutions which are compatible with observ…
Generalized Einstein-Aether theories and the Solar System
Camille Bonvin, Ruth Durrer, Pedro G. Ferreira +2
It has been shown that generalized Einstein-Aether theories may lead to significant modifications to the non-relativistic limit of the Einstein equations. In this paper we study th…
The Cosmology of a Universe with Spontaneously-Broken Lorentz Symmetry
P. G. Ferreira, B. M. Gripaios, R. Saffari +1
A self consistent effective field theory of modified gravity has recently been proposed with spontaneous breaking of local Lorentz invariance. The symmetry is broken by a vector fi…