214 citations · 1.8k across the 77 of their papers we have counts for
77 papers
Gravitational collapse with torsion and universe in a black hole
Nikodem Popławski
We consider gravitational collapse of a fluid sphere with torsion generated by spin, which forms a black hole. We use the Tolman metric and the EinsteinCartan field equations wi…
Gravitational collapse in the expanding Universe
Nikodem Popławski
We use the Tolman metric to describe gravitational collapse of a sphere of a fluid without pressure in spacetime with the Hubble parameter related to the cosmological constant.…
Gravitational deflection of light in interior Schwarzschild metric
Nikodem Popławski
We determine the angle of deflection of light by the gravitational field inside and outside a spherical body with a homogeneous mass density. We show that the largest deflections,…
Black holes in the expanding Universe
Nikodem Popławski
The McVittie metric does not describe a physical black hole in an expanding Universe because the curvature scalar and pressure at its event horizon are infinite. We show that exten…
Gravitational Collapse with Torsion and Universe in a Black Hole
Nikodem Popławski
We consider gravitational collapse of a sphere of a fluid with torsion generated by spin, which forms a black hole. We use the Tolman metric and the EinsteinCartan field equatio…
General-relativistic waveparticle duality with torsion
Francisco Ribeiro Benard Guedes, Nikodem Janusz Popławski
We propose that the four-velocity of a Dirac particle is related to its relativistic wave function by . This relativistic waveparticle duality relation is…