131 citations · 188 across the 6 of their papers we have counts for
6 papers
General Parallel Cosmology
Débora Aguiar Gomes, Jose Beltrán Jiménez, Tomi S. Koivisto
General (tele)parallel Relativity, GR, is the relativistic completion of Einstein's theories of gravity. The focus of this article is the derivation of the homogeneous…
A smoking gun from the power spectrum dipole for elastic interactions in the dark sector
Jose Beltrán Jiménez, Enea Di Dio, David Figueruelo
Models with pure momentum exchange in the dark sector have been shown to provide a promising scenario to tackle the tension in the clustering inferred from high- and low-redshift p…
Some disquisitions on cosmological 2-form dualities
Katsuki Aoki, Jose Beltrán Jiménez, David Figueruelo
In this work we study different aspect of self-interacting 2-form fields with special emphasis in their cosmological applications. We provide the explicit construction of how massl…
On parity-odd sector in metric-affine theories
Jose Beltrán Jiménez, Alejandro Jiménez-Cano, Yuri N. Obukhov
We undertake the construction of quadratic parity-violating terms involving the curvature in the four-dimensional metric-affine gravity. We demonstrate that there are only 12 linea…
Observational constraints on cosmological future singularities
Jose Beltran Jimenez, Ruth Lazkoz, Diego Saez-Gomez +1
In this work we consider a family of cosmological models featuring future singularities. This type of cosmological evolution is typical of dark energy models with an equation of st…
Piercing the Vainshtein screen with anomalous gravitational wave speed: Constraints on modified gravity from binary pulsars
Jose Beltran Jimenez, Federico Piazza, Hermano Velten
By using observations of the Hulse-Taylor pulsar we constrain the gravitational wave (GW) speed to the level of . We apply this result to scalar-tensor theories that gener…