We present current and future constraints on the Hu and Sawicki modified gravity scenario. This model can reproduce a late time accelerated universe and evade solar system constraints. While current cosmological data still allows for distinctive deviations from the cosmological constant picture, future measurements of the growth of structure combined with Supernova Ia luminosity distance data will greatly improve present constraints.
@article{arxiv.1109.4736,
title = {Future constraints on the Hu-Sawicki modified gravity scenario},
author = {Matteo Martinelli and Alessandro Melchiorri and Olga Mena and Valentina Salvatelli and Zahara Girones},
journal= {arXiv preprint arXiv:1109.4736},
year = {2013}
}