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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Laboratory tests of the Galileon
TL;DR: In this paper, the authors describe how laboratory measurements of the Casimir effect and possible deviations from Newtonian gravity can be used to search for Galileon scalar fields, which are used to bound a previously unconstrained combination of Galileon parameters.
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Modified gravity tomography.
TL;DR: In this article, the effect of a canonically normalised scalar field degree of freedom on the dynamics of gravity from small to large scales is considered and it is shown that the effects of modified gravity can be completely captured by the time variations of the scalar fields mass and its coupling to matter.
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Systematic simulations of modified gravity: chameleon models
TL;DR: In this paper, the authors systematically studied 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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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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Cosmological tests of the disformal coupling to radiation
TL;DR: In this article, the authors show that light scalar fields can still be studied and constrained through their interaction with photons, and focus particularly on changes to the Cosmic Microwave Background spectral distortions and violations of the distance duality relation.