https://doi.org/10.1140/epjc/s10052-017-5470-9
Regular Article - Theoretical Physics
Stability of cosmic structures in scalar–tensor theories of gravity
1
Centro Multidisciplinar de Astrofísica, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
2
Instituto de Física, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Santiago, Chile
* e-mail: arrincon@uc.cl
Received:
14
October
2017
Accepted:
13
December
2017
Published online:
18
January
2018
In the present work we study a concrete model of scalar–tensor theory of gravity characterized by two free parameters, and we compare its predictions to observational data and constraints coming from supernovae, solar system tests and the stability of cosmic structures. First an exact analytical solution at the background level is obtained. Using that solution the expression for the turnaround radius is computed. Finally we show graphically how current data and limits put bounds on the parameters of the model at hand.
© The Author(s), 2018
