Constraining some Horndeski gravity theories

dc.contributor.author	Bhattacharya, S.
dc.contributor.author	Chakraborty, S.
dc.date.accessioned	2021-10-10T09:35:16Z
dc.date.available	2021-10-10T09:35:16Z
dc.date.issued	2021-10-10
dc.identifier.uri	http://localhost:8080/xmlui/handle/123456789/2989
dc.description.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 EinsteinGauss-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 Maeda and Dadhich [Phys. Rev. D 75, 044007 (2007)] and Sotiriou and Zhou [Phys. Rev. D 90, 124063 (2014)], respectively. The latter, in particular, applies only to black-hole spacetimes. We further delineate on the numerical bounds of relevant parameters of these theories from such computations.	en_US
dc.language.iso	en_US	en_US
dc.title	Constraining some Horndeski gravity theories	en_US
dc.type	Article	en_US