44 citations · 280 across the 19 of their papers we have counts for
19 papers
Black holes with torsion hair in cubic Holst-type Poincaré gauge gravity: from singular to regular geometries
Sebastian Bahamonde, Jorge Gigante Valcarcel, Matteo Magi
Motivated by the singularity theorems of Poincaré Gauge (PG) theory, we investigate extensions of the Holst quadratic model by introducing cubic order invariants constructed from t…
Black hole superradiance in Poincaré gauge theory
Sebastian Bahamonde, Jorge Gigante Valcarcel
We investigate the phenomenon of black hole superradiance in the presence of torsion within the framework of Poincaré gauge theory. In particular, in contrast to the classical appr…
Gravitational waves in Cubic Metric-Affine Gravity
Sebastian Bahamonde, Jorge Gigante Valcarcel, José M. M. Senovilla
We derive new exact gravitational wave solutions with dynamical torsion and nonmetricity tensors in the framework of cubic Metric-Affine Gravity (MAG). For this purpose, we conside…
Stability in Cubic Metric-Affine Gravity
Sebastian Bahamonde, Jorge Gigante Valcarcel
We analyse the stability issue of the vector and axial modes of the torsion and nonmetricity tensors around general backgrounds in the framework of cubic Metric-Affine Gravity. We…
Algebraic classification of the gravitational field in general metric-affine geometries
Sebastian Bahamonde, Jorge Gigante Valcarcel, José M. M. Senovilla
We present the algebraic classification of the gravitational field in four-dimensional general metric-affine geometries, thus extending the current results of the literature in the…
Stability of Poincaré gauge theory with cubic order invariants
Sebastian Bahamonde, Jorge Gigante Valcarcel
We analyse the stability of the vector and axial sectors of Poincaré gauge theory around general backgrounds in the presence of cubic order invariants defined from the curvature an…
Cosmological Perturbation Theory in Metric-Affine Gravity
Katsuki Aoki, Sebastian Bahamonde, Jorge Gigante Valcarcel +1
We formulate cosmological perturbation theory around the spatially curved FLRW background in the context of metric-affine gauge theory of gravity which includes torsion and nonmetr…
Algebraic classification of the gravitational field in Weyl-Cartan space-times
Sebastian Bahamonde, Jorge Gigante Valcarcel
We present a complete algebraic classification for the curvature tensor in Weyl-Cartan geometry, by applying methods of eigenvalues and principal null directions on its irreducible…
Observational Constraints in Metric-Affine Gravity
Sebastian Bahamonde, Jorge Gigante Valcarcel
We derive the main classical gravitational tests for a recently found vacuum solution with spin and dilation charges in the framework of Metric-Affine gauge theory of gravity. Usin…
Exploring Axial Symmetry in Modified Teleparallel Gravity
Sebastian Bahamonde, Jorge Gigante Valcarcel, Laur Järv +1
Axially symmetric spacetimes play an important role in the relativistic description of rotating astrophysical objects like black holes, stars, etc. In gravitational theories that v…
New models with independent dynamical torsion and nonmetricity fields
Sebastian Bahamonde, Jorge Gigante Valcarcel
We propose a gravitational model which allows the independent dynamical behaviour of the torsion and nonmetricity fields to be displayed in the framework of Metric-Affine gauge the…
Non-geodesic incompleteness in Poincaré gauge gravity
J. A. R. Cembranos, J. Gigante Valcarcel, F. J. Maldonado Torralba
In this work we review the study of singularities in Poincaré gauge theories of gravity. Since one of the most recent studies uses the appearance of black hole regions of arbitrary…
Fermion dynamics in torsion theories
J. A. R. Cembranos, J. Gigante Valcarcel, F. J. Maldonado Torralba
In this work we have studied the non-geodesical behaviour of particles with spin 1/2 in Poincaré gauge theories of gravity, via the WKB method and the Mathisson-Papapetrou equation…
Extended Reissner-Nordström solutions sourced by dynamical torsion
Jose A. R. Cembranos, Jorge Gigante Valcarcel
We find a new exact vacuum solution in the framework of the Poincaré Gauge field theory with massive torsion. In this model, torsion operates as an independent field and introduces…
Stability in quadratic torsion theories
Teodor Borislavov Vasilev, Jose A. R. Cembranos, Jorge Gigante Valcarcel +1
We revisit the definition and some of the characteristics of quadratic theories of gravity with torsion. We start from the most general Lagrangian density quadratic in the curvatur…
Singularities and n-dimensional black holes in torsion theories
J. A. R. Cembranos, J. Gigante Valcarcel, F. J. Maldonado Torralba
In this work we have studied the singular behaviour of gravitational theories with non symmetric connections. For this purpose we introduce a new criteria for the appearance of sin…
New torsion black hole solutions in Poincaré gauge theory
Jose A. R. Cembranos, Jorge Gigante Valcarcel
We derive a new exact static and spherically symmetric vacuum solution in the framework of the Poincaré gauge field theory with dynamical massless torsion. This theory is built in…
Correspondence between Einstein-Yang-Mills-Lorentz systems and dynamical torsion models
Jose A. R. Cembranos, Jorge Gigante Valcarcel
In the framework of Einstein-Yang-Mills theories, we study the gauge Lorentz group and establish a particular correspondence between this case and a certain class of theories with…
Einstein-Yang-Mills-Lorentz black holes
Jose A. R. Cembranos, Jorge Gigante Valcarcel
Different black hole solutions of the coupled Einstein-Yang-Mills equations have been well known for a long time. They have attracted much attention from mathematicians and physici…