F
Federico Piazza
Researcher at University of Paris
Publications - 7
Citations - 1239
Federico Piazza is an academic researcher from University of Paris. The author has contributed to research in topics: Dark matter & Scalar field. The author has an hindex of 6, co-authored 7 publications receiving 1113 citations. Previous affiliations of Federico Piazza include Aix-Marseille University & Institute of Cosmology and Gravitation, University of Portsmouth.
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Journal ArticleDOI
New class of consistent scalar-tensor theories.
Jérôme Gleyzes,Jérôme Gleyzes,David Langlois,Federico Piazza,Federico Piazza,Filippo Vernizzi +5 more
TL;DR: A new class of scalar-tensor theories of gravity that extend Horndeski, or "generalized Galileon," models show that the true propagating degrees of freedom obey well-behaved second-order equations and are thus free from Ostrogradski instabilities, in contrast to standard lore.
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Runaway dilaton and equivalence principle violations.
TL;DR: In a recently proposed scenario, where the dilaton decouples while cosmologically attracted towards infinite bare string coupling, its residual interactions can be related to the amplitude of density fluctuations generated during inflation, and are large enough to be detectable through a modest improvement on present tests of free-fall universality.
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Quasinormal modes of charged, dilaton black holes
TL;DR: In this paper, the complex frequencies of the quasi-normal modes of the dilaton black hole were computed and compared with those obtained for a Reissner-Nordstrom and a Schwarzschild black hole.
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Measuring deviations from a cosmological constant: a field-space parametrization.
TL;DR: A relatively simple description of dark energy based on the dynamics of a scalar field which is exact in the limit that the equation of state approaches a cosmological constant, assuming some degree of smoothness of the potential.
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Model for gravitational interaction between dark matter and baryons.
TL;DR: A phenomenological model where the gravitational interaction between dark matter and baryons is suppressed on small, subgalactic scales is proposed and the gravitational force is described by adding a Yukawa contribution to the standard Newtonian potential.