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- Title
Search for Manifestations of Spin–Torsion Coupling.
- Authors
Trukhanova, Mariya Iv.; Andreev, Pavel; Obukhov, Yuri N.
- Abstract
We investigate the axial vector spin–torsion coupling effects in the framework of the Poincaré gauge theory of gravity with the general Yang–Mills type Lagrangian. The dynamical equations for the "electric" and "magnetic" components of the torsion field variable are obtained in the general form and it is shown that the helicity density and the spin density of the electromagnetic field appear as the physical sources. The modified Maxwell's equations for the electromagnetic field are derived, and the electromagnetic wave propagation under the action of the uniform homogeneous torsion field is considered. We demonstrate the Faraday effect of rotation of the polarization for such a wave and establish the strong bound on the possible cosmic axial torsion field from the astrophysical data.
- Subjects
MAXWELL equations; ELECTROMAGNETIC wave propagation; ELECTROMAGNETIC fields; FARADAY effect; SPIN-spin interactions; TORSION
- Publication
Universe (2218-1997), 2023, Vol 9, Issue 1, p38
- ISSN
2218-1997
- Publication type
Article
- DOI
10.3390/universe9010038