21 citations · 32 across the 8 of their papers we have counts for
3 papers · 1 filter
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
The intrinsic presence of ghosts in the symmetric teleparallel framework is elucidated. We illustrate our general arguments in theories by studying perturbations in…
Nonexistence of a parent theory for general relativity and unimodular gravity
Gerardo García-Moreno, Alejandro Jiménez Cano
General Relativity (GR) and Unimodular Gravity (UG) provide two equivalent descriptions of gravity that differ in the nature of the cosmological constant. While GR is based on the…
On the physical viability of black hole solutions in Einsteinian Cubic Gravity and its generalisations
Jose Beltrán Jiménez, Alejandro Jiménez-Cano
In this note, we discuss the pathological nature of black holes in Einsteinian Cubic gravity and its extensions. We compute the equations for the odd perturbations and show how sph…