P
Philippe Brax
Researcher at Université Paris-Saclay
Publications - 74
Citations - 2737
Philippe Brax is an academic researcher from Université Paris-Saclay. The author has contributed to research in topics: Scalar field & Dark energy. The author has an hindex of 23, co-authored 74 publications receiving 2474 citations. Previous affiliations of Philippe Brax include Centre national de la recherche scientifique & Institut d'Astrophysique de Paris.
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Systematic simulations of modified gravity: chameleon models
TL;DR: In this article, the authors systematically study the linear and nonlinear structure formation in chameleon theories of modified gravity, using a generic parameterisation which describes a large class of models using only 4 parameters.
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Shining light on modifications of gravity
TL;DR: In this paper, it was shown that high-precision, low-energy photon experiments are also constraining for disformal scalar field theories, and particularly important because of the difficulty of constraining these couplings with other laboratory experiments.
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Screening fifth forces in k-essence and DBI models
TL;DR: In this paper, it has been shown that a Vainshtein-like screening mechanism exists for non-linear scalar fields with k-essence models, such as the chameleon model, but with limited applicability.
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Pulsar constraints on screened modified gravity
TL;DR: In this paper, the authors calculate the rate of energy loss from compact astrophysical objects due to a scalar field in screened modified gravity models of the chameleon, dilaton and symmetron types.
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The Speed of Galileon Gravity
TL;DR: In this article, the authors analyzed the speed of gravitational waves in coupled Galileon models with an equation of state and a ghost-free Minkowski limit, and they showed that the acceleration of the expansion of the universe can not be explained by the mass of the gravitons.