Publications (62)
Effective field theory of coupled dark energy and dark matter
Katsuki Aoki, Jose Beltrán Jiménez, Masroor C. Pookkillath +1
Generalized multi-Proca fields
Jose Beltrán Jiménez, Lavinia Heisenberg
On cosmological signatures of baryons-dark energy elastic couplings
Jose Beltrán Jiménez, Dario Bettoni, David Figueruelo +1
Moving superfluids in the rotating universe
Jose Beltrán Jiménez, Federico Piazza, Javier Vecino
Non-trivial thick brane realisations with 3-forms
Bruno J. Barros, Jose Beltrán Jiménez
K-nonizing
Jose Beltrán Jiménez, Teodor Borislavov Vasilev, DarÃo Jaramillo-Garrido +2
Resilience of DBI screened objects and their ladder symmetries
Jose Beltrán Jiménez, Dario Bettoni, Philippe Brax
Effects of biasing on the galaxy power spectrum at large scales
Jose Beltrán Jiménez, Ruth Durrer
Horndeski in motion
J. Bayron Orjuela-Quintana, Jose Beltrán Jiménez
On the strong coupling of Einsteinian Cubic Gravity and its generalisations
Jose Beltrán Jiménez, Alejandro Jiménez-Cano
Ghosts in metric-affine higher order curvature gravity
Jose Beltrán Jiménez, Adria Delhom
Euclidean teleparallel relativity and black hole partition functions
Jose Beltrán Jiménez, Tomi S. Koivisto
General Parallel Cosmology
Débora Aguiar Gomes, Jose Beltrán Jiménez, Tomi S. Koivisto
Screening Vector Field Modifications of General Relativity
Jose Beltrán Jiménez, André LuÃs Delvas Fróes, David F. Mota
Listening to Celestial Algebras
Jose Beltrán Jiménez, Tomi S. Koivisto
Cosmic magnetic fields and dark energy in extended electromagnetism
Jose Beltrán Jiménez, Antonio L. Maroto
On the physical viability of black hole solutions in Einsteinian Cubic Gravity and its generalisations
Jose Beltrán Jiménez, Alejandro Jiménez-Cano
J-PAS: Forecasts for dark matter - dark energy elastic couplings
David Figueruelo, Miguel Aparicio Resco, Florencia A. Teppa Pannia +21
Physical nonviability of $f(\mathbb{Q})$ in the scalar-tensor representation
Jose Beltrán Jiménez, Alejandro Jiménez Cano, Tomi S. Koivisto
The authors demonstrate that the scalar‑tensor representation of f(Q) gravity inevitably contains a propagating ghost degree of freedom, confirming its physical non‑viability.
Noether charges in the geometrical trinity of gravity
Jose Beltrán Jiménez, Tomi S. Koivisto
Revisiting observational constraints on coupled exponential quintessence with energy and momentum transfers: degeneracy with massive neutrinos
Jose Beltrán Jiménez, Kiyotomo Ichiki, Xiaolin Liu +2
On parity-odd sector in metric-affine theories
Jose Beltrán Jiménez, Alejandro Jiménez-Cano, Yuri N. Obukhov
Non-linear structure formation with elastic interactions in the dark sector
Jose Beltrán Jiménez, David Figueruelo, David F. Mota +1
On Evidence for Elastic Interactions in the Dark Sector
Jose Beltrán Jiménez, Dario Bettoni, David Figueruelo +1
Accidental gauge symmetries of Minkowski spacetime in Teleparallel theories
Jose Beltrán Jiménez, Tomi S. Koivisto
On the (non-)degeneracy of massive neutrinos and elastic interactions in the dark sector
Jose Beltrán Jiménez, David Figueruelo, Florencia Anabella Teppa Pannia
Tensor perturbations in a general class of Palatini theories
Jose Beltrán Jiménez, Lavinia Heisenberg, Gonzalo J. Olmo
Cosmology with a Continuous Tower of Scalar Fields
Jose Beltrán Jiménez, David F. Mota, Paulo Santos
Isotropic universes with a preferred direction
Jose Beltrán Jiménez, Shinji Tsujikawa
A class of ghost-free theories in symmetric teleparallel geometry
Antonio G. Bello-Morales, Jose Beltrán Jiménez, Alejandro Jiménez Cano +2
Pathological Character of Modifications to Coincident General Relativity: Cosmological Strong Coupling and Ghosts in $f(\Q)$ Theories
Débora Aguiar Gomes, Jose Beltrán Jiménez, Alejandro Jiménez Cano +1
Lost in translation: the Abelian affine connection (in the coincident gauge)
Jose Beltrán Jiménez, Tomi S. Koivisto
Hybrid quantum-classical simulations of semiclassical gravity
Carlos Fulgado-Claudio, Daniel González-Cuadra, Jose Beltrán Jiménez +1
Born-Infeld Gravity: Constraints from Light-by-Light Scattering and an Effective Field Theory Perspective
Jose Beltrán Jiménez, Adrià Delhom, Gonzalo J. Olmo +1
Charged Dark Matter and the $H_0$ tension
Jose Beltrán Jiménez, Dario Bettoni, Philippe Brax
Instabilities in Metric-Affine Theories of Gravity
Jose Beltrán Jiménez, Adrià Delhom
Spacetimes with vector distortion: Inflation from generalised Weyl geometry
Jose Beltrán Jiménez, Tomi S. Koivisto
The canonical frame of purified gravity
Jose Beltrán Jiménez, Lavinia Heisenberg, Tomi S. Koivisto
Modified Gravity and Cosmology: An Update by the CANTATA Network
Emmanuel N. Saridakis, Ruth Lazkoz, Vincenzo Salzano +50
Non-Linear Obstructions for Consistent New General Relativity
Jose Beltrán Jiménez, Konstantinos F. Dialektopoulos
Energy and entropy in the Geometrical Trinity of gravity
Débora Aguiar Gomes, Jose Beltrán Jiménez, Tomi S. Koivisto
Limits on the anomalous speed of gravitational waves from binary pulsars
Hermano Velten, Jose Beltrán Jiménez, Federico Piazza
Stability of Horndeski vector-tensor interactions
Jose Beltrán Jiménez, Ruth Durrer, Lavinia Heisenberg +1
Some disquisitions on cosmological 2-form dualities
Katsuki Aoki, Jose Beltrán Jiménez, David Figueruelo
Probing cosmological fields with gravitational wave oscillations
Jose Beltrán Jiménez, Jose MarÃa Ezquiaga, Lavinia Heisenberg
Derivative self-interactions for a massive vector field
Jose Beltrán Jiménez, Lavinia Heisenberg
Revisiting the Stability of Quadratic Poincaré Gauge Gravity
Jose Beltrán Jiménez, Francisco José Maldonado Torralba
Anisotropic deformations in a class of projectively-invariant metric-affine theories of gravity
Jose Beltrán Jiménez, Daniel de Andrés, Adrià Delhom
A smoking gun from the power spectrum dipole for elastic interactions in the dark sector
Jose Beltrán Jiménez, Enea Di Dio, David Figueruelo
Probing elastic interactions in the dark sector and the role of $S_8$
Jose Beltrán Jiménez, Dario Bettoni, David Figueruelo +2
Beyond $Î$CDM: Problems, solutions, and the road ahead
Philip Bull, Yashar Akrami, Julian Adamek +37
Polarisability and magnetisation of electrically $K$-mouflaged objects: the Born-Infeld ModMax case study
Jose Beltrán Jiménez, Dario Bettoni, Philippe Brax
General Teleparallel Quadratic Gravity
Jose Beltrán Jiménez, Lavinia Heisenberg, Damianos Iosifidis +2
A solid unification of the dark sector
Jose Beltrán Jiménez, MarÃa Pérez Garrote, Florencia A. Teppa Pannia +1
Generalized Proca and its Constraint Algebra
Jose Beltrán Jiménez, Claudia de Rham, Lavinia Heisenberg
Mimicking wormholes in Born-Infeld electrodynamics
Jose Beltrán Jiménez, Luis J. Garay, MarÃa Pérez Garrote
Velocity-dependent interacting dark energy and dark matter with a Lagrangian description of perfect fluids
Jose Beltrán Jiménez, Dario Bettoni, David Figueruelo +2
Charged Black Hole Mergers: Orbit Circularisation and Chirp Mass Bias
Ãyvind Christiansen, Jose Beltrán Jiménez, David F. Mota
Cosmology in $f(Q)$ geometry
Jose Beltrán Jiménez, Lavinia Heisenberg, Tomi Sebastian Koivisto +1
Finite size effects in DBI and Born-Infeld for screened spherically symmetric objects
Jose Beltrán Jiménez, Dario Bettoni, Philippe Brax +2
Infrared lessons for ultraviolet gravity: the case of massive gravity and Born-Infeld
Jose Beltrán Jiménez, Lavinia Heisenberg, Gonzalo J. Olmo
A longitudinal gauge degree of freedom and the Pais Uhlenbeck field
Jose Beltrán Jiménez, Enea Di Dio, Ruth Durrer