36 citations · 108 across the 8 of their papers we have counts for
9 papers
Relativistic cosmology and intrinsic spin of matter: Results and theorems in Einstein-Cartan theory
Paulo Luz, José P. S. Lemos
We start by presenting the general set of structure equations for the 1+3 threading spacetime decomposition in 4 spacetime dimensions, valid for any theory of gravitation based on…
Bubble universes and traversable wormholes
José P. S. Lemos, Paulo Luz
Bubble universes and traversable wormholes in general relativity can be realized as two sides of the same concept. To exemplify, we find, display, and study in a unified manner a M…
All fundamental electrically charged thin shells in general relativity: From star shells to tension shell black holes and regular black holes and beyond
José P. S. Lemos, Paulo Luz
We classify all fundamental electrically charged thin shells in general relativity, i.e., static spherically symmetric perfect fluid thin shells with a Minkowski spacetime interior…
Singularity theorems and the inclusion of torsion in affine theories of gravity
Paulo Luz, Filipe C. Mena
We extend the scope of the Raychaudhuri-Komar singularity theorem of General Relativity to affine theories of gravity with and without torsion. We first generalize the existing foc…
Static compact objects in Einstein-Cartan theory
Paulo Luz, Sante Carloni
We generalize the Tolman-Oppenheimer-Volkoff equations for space-times endowed with a Weyssenhoff like torsion field in the Einstein-Cartan theory. The new set of structure equatio…
Influence of intrinsic spin in the formation of singularities for inhomogeneous effective dust space-times
Paulo Luz, Filipe C. Mena, Amir Hadi Ziaie
The evolution of inhomogeneous space-times composed of uncharged fermions is studied for Szekeres metrics which have no Killing vectors, in general. Using the Einstein-Cartan theor…
Raychaudhuri equation in spacetimes with torsion
Paulo Luz, Vincenzo Vitagliano
Given a spacetime with nonvanishing torsion, we discuss the equation for the evolution of the separation vector between infinitesimally close curves in a congruence. We show that t…
Newtonian wormholes with spherical symmetry and tidal forces on test particles
Paulo Luz, José P. S. Lemos
A spherically symmetric wormhole in Newtonian gravitation in curved space, enhanced with a connection between the mass density and the Ricci scalar, is presented. The wormhole, con…
Newtonian wormholes
José P. S. Lemos, Paulo Luz
A wormhole solution in Newtonian gravitation, enhanced through an equation relating the Ricci scalar to the mass density, is presented. The wormhole inhabits a spherically symmetri…