213 citations · 2.9k across the 50 of their papers we have counts for
6 papers · 1 filter
Linear perturbations in K-mouflage cosmologies with massive neutrinos
Alexandre Barreira, Philippe Brax, Sebastien Clesse +2
We present a comprehensive derivation of linear perturbation equations for different matter species, including photons, baryons, cold dark matter, scalar fields, massless and massi…
Nonlinear structure formation in Nonlocal Gravity
Alexandre Barreira, Baojiu Li, Wojciech A. Hellwing +2
We study the nonlinear growth of structure in nonlocal gravity models with the aid of N-body simulation and the spherical collapse and halo models. We focus on a model in which the…
The observational status of Galileon gravity after Planck
Alexandre Barreira, Baojiu Li, Carlton Baugh +1
We use the latest CMB data from Planck, together with BAO measurements, to constrain the full parameter space of Galileon gravity. We constrain separately the three main branches o…
Galileon: modified gravity with massive neutrinos as a testable alternative to CDM
Alexandre Barreira, Baojiu Li, Carlton Baugh +1
We show that, in the presence of massive neutrinos, the Galileon gravity model provides a very good fit to the current CMB temperature, CMB lensing and BAO data. This model, which…
Halo model and halo properties in Galileon gravity cosmologies
Alexandre Barreira, Baojiu Li, Wojciech A. Hellwing +3
We investigate the performance of semi-analytical modelling of large-scale structure in Galileon gravity cosmologies using results from N-body simulations. We focus on the Cubic an…
A clear and measurable signature of modified gravity in the galaxy velocity field
Wojciech A. Hellwing, Alexandre Barreira, Carlos S. Frenk +2
The velocity field of dark matter and galaxies reflects the continued action of gravity throughout cosmic history. We show that the low-order moments of the pairwise velocity distr…