557 citations · 2.3k across the 25 of their papers we have counts for
5 papers · 1 filter
Probing cosmological fields with gravitational wave oscillations
Jose Beltrán Jiménez, Jose María Ezquiaga, Lavinia Heisenberg
Gravitational wave (GW) oscillations occur whenever there are additional tensor modes interacting with the perturbations of the metric coupled to matter. These extra modes can aris…
Revisiting the Stability of Quadratic Poincaré Gauge Gravity
Jose Beltrán Jiménez, Francisco José Maldonado Torralba
Poincaré gauge theories provide an approach to gravity based on the gauging of the Poincaré group, whose homogeneous part generates curvature while the translational sector gives r…
Non-Linear Obstructions for Consistent New General Relativity
Jose Beltrán Jiménez, Konstantinos F. Dialektopoulos
We revisit the field content and consistency of the New General Relativity family of theories. These theories are constructed in a geometrical framework with a flat and metric-comp…
Cosmology in geometry
Jose Beltrán Jiménez, Lavinia Heisenberg, Tomi Sebastian Koivisto +1
The universal character of the gravitational interaction provided by the equivalence principle motivates a geometrical description of gravity. The standard formulation of General R…
On structure formation from a small-scales-interacting dark sector
Mahnaz Asghari, Jose Beltran Jimenez, Shahram Khosravi +1
We consider a cosmological model with an interaction between dark matter and dark energy which leaves the background cosmology unaffected and only affects the evolution of the pert…