213 citations · 2.9k across the 50 of their papers we have counts for
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Speeding up N-body simulations of modified gravity: Vainshtein screening models
Alexandre Barreira, Sownak Bose, Baojiu Li
We introduce and demonstrate the power of a method to speed up current iterative techniques for N-body modified gravity simulations. Our method is based on the observation that the…
Modified Gravity N-body Code Comparison Project
Hans A. Winther, Fabian Schmidt, Alexandre Barreira +12
Self-consistent -body simulations of modified gravity models are a key ingredient to obtain rigorous constraints on deviations from General Relativity using large-scale st…
Galaxy cluster lensing masses in modified lensing potentials
Alexandre Barreira, Baojiu Li, Elise Jennings +4
We determine the concentration-mass relation of 19 X-ray selected galaxy clusters from the CLASH survey in theories of gravity that directly modify the lensing potential. We model…
Weak lensing by voids in modified lensing potentials
Alexandre Barreira, Marius Cautun, Baojiu Li +2
We study lensing by voids in Cubic Galileon and Nonlocal gravity cosmologies, which are examples of theories of gravity that modify the lensing potential. We find voids in the dark…
K-mouflage gravity models that pass Solar System and cosmological constraints
Alexandre Barreira, Philippe Brax, Sebastien Clesse +2
We show that Solar System tests can place very strong constraints on K-mouflage models of gravity, which are coupled scalar field models with nontrivial kinetic terms that screen t…