131 citations · 457 across the 17 of their papers we have counts for
6 papers · 1 filter
Is the Quantum Hall Effect influenced by the gravitational field?
Friedrich W. Hehl, Yuri N. Obukhov, Bernd Rosenow
Most of the experiments on the quantum Hall effect (QHE) were made at approximately the same height above sea level. A future international comparison will determine whether the gr…
The Cotton tensor in Riemannian spacetimes
A. Garcia, F. W. Hehl, C. Heinicke +1
Recently, the study of three-dimensional spaces is becoming of great interest. In these dimensions the Cotton tensor is prominent as the substitute for the Weyl tensor. It is confo…
Maxwell's field coupled nonminimally to quadratic torsion: Induced axion field and birefringence of the vacuum
Yakov Itin, Friedrich W. Hehl
We consider a possible (parity conserving) interaction between the electromagnetic field and a torsion field of spacetime. For generic elementary torsion, gauge invariant…
Torsion nonminimally coupled to the electromagnetic field and birefringence
Guillermo F. Rubilar, Yuri N. Obukhov, Friedrich W. Hehl
In conventional Maxwell--Lorentz electrodynamics, the propagation of light is influenced by the metric, not, however, by the possible presence of a torsion T. Still the light can f…
Electromagnetic energy-momentum and forces in matter
Yuri N. Obukhov, Friedrich W. Hehl
We discuss the electromagnetic energy-momentum distribution and the mechanical forces of the electromagnetic field in material media. There is a long-standing controversy on these…
Exact vacuum solution of a (1+2)-dimensional Poincare gauge theory: BTZ solution with torsion
Alberto A. Garcia, Friedrich W. Hehl, Christian Heinicke +1
In (1+2)-dimensional Poincaré gauge gravity, we start from a Lagrangian depending on torsion and curvature which includes additionally {\em translational} and {\em Lorentzian} Cher…