On Possible Light-Torsion Mixing in Background Magnetic Field
High Energy Physics - Phenomenology
2009-09-25 v4 Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
The interaction of the light with propagating axial torsion fields in the presence of an external magnetic field has been investigated. Axial torsion fields appearing in higher derivative quantum gravity possess two states, with spin one and zero, with different masses. The torsion field with spin-0 state is a ghost that can be removed if its mass is infinite. We investigate the possibility when the light mixes with the torsion fields resulting in the effect of vacuum birefringence and dichroism. The expressions for ellipticity and the rotation of light polarization axis depending on the coupling constant and the external magnetic field have been obtained.
Keywords
Cite
@article{arxiv.0804.4011,
title = {On Possible Light-Torsion Mixing in Background Magnetic Field},
author = {S. I. Kruglov},
journal= {arXiv preprint arXiv:0804.4011},
year = {2009}
}
Comments
12 pages, title changed, shortened journal version, accepted in Eur.Phys.J.C