2.5k citations · 8.6k across the 62 of their papers we have counts for
62 papers
Joint reconstructions of growth and expansion histories from stage-IV surveys with minimal assumptions. II. Modified gravity and massive neutrinos
Rodrigo Calderón, Benjamin L'Huillier, David Polarski +2
Based on a formalism introduced in our previous work, we reconstruct the phenomenological function describing deviations from General Relativity (GR) in a model-in…
Joint reconstructions of growth and expansion histories from stage-IV surveys with minimal assumptions I: Dark Energy beyond
R. Calderón, B. L'Huillier, D. Polarski +2
Combining Supernovae, Baryon Acoustic Oscillations and Redshift-Space Distortions data from the next generation of (Stage-IV) cosmological surveys, we aim to reconstruct the expans…
Bouncing Cosmological Isotropic Solutions in Scalar-Tensor Gravity
D. Polarski, A. A. Starobinsky, Y. Verbin
Bouncing non-singular isotropic cosmological solutions are investigated in a simple model of scalar-tensor gravity. New families of such solutions are found and their properties ar…
Weak gravity on a CDM background
Radouane Gannouji, Leandros Perivolaropoulos, David Polarski +1
We consider Horndeski modified gravity models obeying stability, velocity of gravitational waves equals and quasistatic approximation (QSA) on subhorizon scales. We assum…
Global properties of the growth index: mathematical aspects and physical relevance
R. Calderon, D. Felbacq, R. Gannouji +2
We analyze the global behaviour of the growth index of cosmic inhomogeneities in an isotropic homogeneous universe filled by cold non-relativistic matter and dark energy (DE) with…
Global properties of the growth index of matter inhomogeneities in the universe
R. Calderon, D. Felbacq, R. Gannouji +2
We perform here a global analysis of the growth index behaviour from deep in the matter era till the far future. For a given cosmological model in GR or in modified gravity, th…