Vainshtein mechanism in general purely disformal gravity theory
arXiv:1606.04465
Abstract
We study a theory of gravity in which the action is a result from the general purely disformal transformation on the Einstein-Hilbert action. This theory is a sub-class of GLPV theory which is the the generalization of covariant Galileon. Nevertheless, we find that the self accelerating solution for the background universe disappears in this theory. We also find that, for this theory, the Vainshtein mechanism is absent. However, the Vainshtein mechanism is not necessary for this theory, because this theory can nearly mimic the Einstein theory of gravity at all scales inside the Huble radius without this mechanism.
13 pages, 2 figures, discussion and conclusions are improved
References in corpus (15)
- Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
- Disappearing cosmological constant in f(R) gravity
- Healthy theories beyond Horndeski
- Breaking of Vainshtein screening in scalar-tensor theories beyond Horndeski
- Astrophysical Probes of the Vainshtein Mechanism: Stars and Galaxies
- Modified gravity inside astrophysical bodies
- Disformal couplings and the dark sector of the universe
- Disformal Theories of Gravity: From the Solar System to Cosmology
- Hamiltonian structure of scalar-tensor theories beyond Horndeski
- Chameleon dark energy models with characteristic signatures
- Disformal Gravity Theories: A Jordan Frame Analysis
- Towards Viable Cosmological Models of Disformal Theories of Gravity
- Observational signatures of the theories beyond Horndeski
- Existence and disappearance of conical singularities in Gleyzes-Langlois-Piazza-Vernizzi theories
- Conical singularities and the Vainshtein screening in full GLPV theories