New torsion black hole solutions in Poincaré gauge theory

J. Cosmol. Astropart. Phys.

Torralba

2019

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. We have analysed the relation between the two approaches and we have argued the different advantages associated with the WKB approximation. Within this approach, we have calculated the trajectories in a particular Poincaré gauge theory, discussing the viability of measuring such a motion.

Section: Calculations Within the Reissner-nordström Geometry Induced mentioning

confidence: 99%

Fermion dynamics in torsion theories

J. Cosmol. Astropart. Phys.

Torralba

2019

“…In analogy to the massless torsion case [12], we demand the condition Ψ 1 = Ψ 2 ≡ Ψ(r) to guarantee the compatibility requirement with external electric and magnetic fields, as in the standard Einstein-Maxwell framework of GR. Finally, we also require the avoidance of undesirable singularities from any solution F a bc referred to the rotated basis ϑ a = Λ a b e b given by the following vector fields:…”

Section: Space-time Symmetries and Consistency Constraintsmentioning

confidence: 99%

Extended Reissner–Nordström solutions sourced by dynamical torsion

2018

Physics Letters B

Self Cite

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 corrections to the vacuum structure present in General Relativity. The new static and spherically symmetric configuration shows a Reissner-Nordström-like geometry characterized by a spin charge. It extends the known massless torsion solution to the massive case. The corresponding Reissner-Nordström-de Sitter solution is also compatible with a cosmological constant and additional U (1) gauge fields.

“…In this section, we will study a PG theory of gravity, hence it has the same geometrical background explained in section IV, with the following vacuum Lagrangian [31]:…”

Section: Singularities In Dynamical Torsion Theoriesmentioning

confidence: 99%

Singularities and n-dimensional black holes in torsion theories

J. Cosmol. Astropart. Phys.

Torralba

2017

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 singularities based on the existence of black/white hole regions of arbitrary codimension defined inside a spacetime of arbitrary dimension. We discuss this prescription by increasing the complexity of the particular torsion theory under study. In this sense, we start with Teleparallel Gravity, then we analyse Einstein-Cartan theory, and finally dynamical torsion models.