107 citations · 654 across the 20 of their papers we have counts for
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Invariant conserved currents for gravity
Yuri N. Obukhov, Guillermo F. Rubilar
We develop a general approach, based on the Lagrange-Noether machinery, to the definition of invariant conserved currents for gravity theories with general coordinate and local Lor…
Invariant conserved currents in gravity theories: diffeomorphisms and local gauge symmetries
Yuri N. Obukhov, Guillermo F. Rubilar
Previously, we have developed a general method to construct invariant conserved currents and charges in gravitational theories with Lagrangians that are invariant under spacetime d…
Elie Cartan's torsion in geometry and in field theory, an essay
Friedrich W. Hehl, Yuri N. Obukhov
We review the application of torsion in field theory. First we show how the notion of torsion emerges in differential geometry. In the context of a Cartan circuit, torsion is relat…
Forces and momenta caused by electromagnetic waves in magnetoelectric media
Yuri N. Obukhov, Friedrich W. Hehl
We analyse the propagation of electromagnetic waves in magnetoelectric media. Recently, Feigel has predicted that such a medium may ``extract momentum from vacuum" in the sense tha…
Exact Foldy-Wouthuysen transformation for gravitational waves and magnetic field background
Bruno Goncalves, Yuri N. Obukhov, Ilya L. Shapiro
We consider an exact Foldy-Wouthuysen transformation for the Dirac spinor field on the combined background of a gravitational wave and constant uniform magnetic field. By taking th…
Relativistic analysis of magnetoelectric crystals: extracting a new 4-dimensional P odd and T odd pseudoscalar from Cr_2 O_3 data
Friedrich W. Hehl, Yuri N. Obukhov, Jean-Pierre Rivera +1
Earlier, the linear magnetoelectric effect of chromium sesquioxide Cr_2 O_3 has been determined experimentally as a function of temperature. One measures the electric field-induced…