Constraining some Horndeski gravity theories
arXiv:1607.03693 · doi:10.1103/PhysRevD.95.044037
Abstract
We discuss two spherically symmetric solutions admitted by the Horndeski (or scalar tensor) theory in the context of solar system and astrophysical scenarios. One of these solutions is derived for Einstein-Gauss-Bonnet gravity, while the other originates from the coupling of the Gauss-Bonnet invariant with a scalar field. Specifically, we discuss the perihelion precession and the bending angle of light for these two different spherically symmetric spacetimes derived in references \cite{Maeda:2006hj} and \cite{Sotiriou:2014pfa} respectively. The later in particular, applies only to the black hole spacetimes. We further delineate on the numerical bounds of relevant parameters of these theories from such computations.
v2, 14pp; title changed, added references and discussions; improved presentation; accepted in PRD
References in corpus (12)
- Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
- The Newtonian Limit of F(R) gravity
- Model independent evidence for dark energy evolution from Baryon Acoustic Oscillations
- Solar system constraints on f(T) gravity
- Non-Spinning Black Holes in Alternative Theories of Gravity
- Spherically symmetric brane spacetime with bulk gravity
- Infrared instability of the de Sitter space
- Perturbative Quantum Gravity Comes of Age
- Matter without matter: novel Kaluza-Klein spacetime in Einstein-Gauss-Bonnet gravity
- Constraints on Galileon-induced precessions from solar system orbital motions
- Strong Gravitational Lensing by Sgr A*
- No hair theorems for positive Λ