13 citations · 13 across the 1 of their papers we have counts for
11 papers
A nonsingular, anisotropic universe in a black hole with torsion and particle production
Nikodem J. PopÅawski
We consider a universe formed in a black hole in general relativity with spin and torsion. The interior of a Schwarzschild black hole can be represented by the KantowskiSachs me…
Universe in a black hole in EinsteinCartan gravity
Nikodem PopÅawski
The conservation law for the angular momentum in curved spacetime, consistent with relativistic quantum mechanics, requires that the antisymmetric part of the affine connection (to…
Spinors with torsion and matterantimatter asymmetry
Nikodem PopÅawski
The conservation law for the orbital plus spin angular momentum of a free Dirac particle in curved spacetime requires that the affine connection has the antisymmetric part: the tor…
Gravitational collapse of a fluid with torsion into a universe in a black hole
Nikodem PopÅawski
We consider gravitational collapse of a spherically symmetric sphere of a fluid with spin and torsion into a black hole. We use the Tolman metric and the EinsteinCartan field eq…
Schwinger's variational principle in EinsteinCartan gravity
Nikodem PopÅawski
By applying Schwinger's variational principle to the EinsteinCartan action for the gravitational field, we derive quantum commutation relations between the metric and torsion te…
The energy and momentum of the Universe
Nikodem J. PopÅawski
The EinsteinCartanSciamaKibble theory of gravity naturally extends general relativity to include quantum-mechanical, intrinsic angular momentum of matter by equipping spac…