2k citations · 14.6k across the 169 of their papers we have counts for
10 papers · 1 filter
Cosmology with a Continuous Tower of Scalar Fields
Jose Beltrán Jiménez, David F. Mota, Paulo Santos
We study the cosmological evolution for a universe in the presence of a continuous tower of massive scalar fields which can drive the current phase of accelerated expansion of the…
Screening Vector Field Modifications of General Relativity
Jose Beltrán Jiménez, André Luís Delvas Fróes, David F. Mota
A screening mechanism for conformal vector-tensor modifications of general relativity is proposed. The conformal factor depends on the norm of the vector field and makes the field…
Unifying static analysis of gravitational structures with a scale-dependent scalar field gravity as an alternative to dark matter
David F. Mota, Vincenzo Salzano, Salvatore Capozziello +1
Aims. We investigated the gravitational effects of a scalar field within scalar-tensor gravity as an alternative to dark matter. Motivated by chameleon, symmetron and f(R)-gravity…
DBI Galileons in the Einstein Frame: Local Gravity and Cosmology
Miguel Zumalacarregui, Tomi S. Koivisto, David F. Mota
It is shown that a disformally coupled theory in which the gravitational sector has the Einstein-Hilbert form is equivalent to a quartic DBI Galileon Lagrangian, possessing non-lin…
Galaxy Rotation Curves as a probe of Chameleon-Screened Scalar Fields
David F. Mota
This paper has been withdrawn by the author due to a mistake.
Cosmology and fundamental physics with the Euclid satellite
Luca Amendola, Stephen Appleby, David Bacon +60
Euclid is a European Space Agency medium class mission selected for launch in 2019 within the Cosmic Vision 2015-2025 programme. The main goal of Euclid is to understand the origin…