75 citations · 148 across the 4 of their papers we have counts for
6 papers
Thin-shell wormholes in (2+1)-dimensional F(R) theories
Cecilia Bejarano, Ernesto F. Eiroa, Griselda Figueroa-Aguirre
We construct a broad family of thin-shell wormholes with circular symmetry in (2+1)-dimensional F(R) theories of gravity, with constant scalar curvature R. We study the stability o…
Geometric inequivalence of metric and Palatini formulations of General Relativity
Cecilia Bejarano, Adria Delhom, Alejandro Jiménez-Cano +2
Projective invariance is a symmetry of the Palatini version of General Relativity which is not present in the metric formulation. The fact that the Riemann tensor changes nontrivia…
Reflections on the covariance of modified teleparallel theories of gravity
Cecilia Bejarano, Rafael Ferraro, Franco Fiorini +1
We review the current status of the Lorentz covariance in teleparallel and modified teleparallel theories of gravity, and discuss the controversial features of the different approa…
McVittie solution in f(T) gravity
Cecilia Bejarano, Rafael Ferraro, María José Guzmán
We show that McVittie geometry, which describes a black hole embedded in a FLRW universe, not only solves Einstein equations but also remains as a non-deformable solution of f(T) g…
The role of torsion in projective invariant theories of gravity with non-minimally coupled matter fields
V. I. Afonso, Cecilia Bejarano, Jose Beltran Jimenez +2
We study a large family of metric-affine theories with a projective symmetry, including non-minimally coupled matter fields which respect this invariance. The symmetry is straightf…
Thin-shell wormholes associated with global cosmic strings
Cecilia Bejarano, Ernesto F. Eiroa, Claudio Simeone
In this article we construct cylindrical thin-shell wormholes in the context of global cosmic strings. We study the stability of static configurations under perturbations preservin…