Updated constraints from the Planck experiment on modified gravity

Constraints on modified gravity from Planck 2015: when the health of your theory makes the difference

Planck 2015 results . XIV . Dark energy and modified gravity

We study the implications of Planck data for models of dark energy (DE) and modified gravity (MG), beyond the standard cosmological constant scenario. We start with cases where the DE only directly affects the background expansion, considering Taylor expansions of the equation of state w(a), as well as principal component analysis and parameterizations related to the potential of a minimally co...

Planck 2015 results - XIV. Dark energy and modified gravity

We study the implications of Planck data for models of dark energy (DE) and modified gravity (MG) beyond the standard cosmological constant scenario. We start with cases where the DE only directly affects the background evolution, considering Taylor expansions of the equation of state w(a), as well as principal component analysis and parameterizations related to the potential of a minimally cou...

CMB lensing constraints on dark energy and modified gravity scenarios

Erminia Calabrese, Asantha Cooray, Matteo Martinelli, Alessandro Melchiorri, Luca Pagano, Anže Slosar, and George F. Smoot Physics Department and INFN, Universita’ di Roma ‘‘La Sapienza’’, Ple Aldo Moro 2, 00185, Rome, Italy Center for Cosmology, Department of Physics & Astronomy, University of California Irvine, Irvine, California 92697, USA Department of Astrophysical Sciences, Princeton Univ...

Astronomical constraints on some long-range models of modified gravity

In this paper we use the corrections to the usual Newton-Einstein secular precessions of the perihelia of the inner planets of the Solar System, phenomenologically estimated as solve-for parameters by the Russian astronomer E.V. Pitjeva by fitting almost one century of data with the EPM2004 ephemerides, in order to constrain some long-range models of modified gravity recently put forth to addre...