Cosmic optical activity from an inhomogeneous Kalb-Ramond field
Abstract
The effects of introducing a harmonic spatial inhomogeneity into the Kalb-Ramond field, interacting with the Maxwell field according to a `string-inspired' proposal made in earlier work are investigated. We examine in particular the effects on the polarization of synchrotron radiation from cosmologically distant (i.e. of redshift greater than 2) galaxies, as well as the relation between the electric and magnetic components of the radiation field. The rotation of the polarization plane of linearly polarized radiation is seen to acquire an additional contribution proportional to the square of the frequency of the dual Kalb-Ramond axion wave, assuming that it is far smaller compared to the frequency of the radiation field.
Keywords
Cite
@article{arxiv.hep-th/0109135,
title = {Cosmic optical activity from an inhomogeneous Kalb-Ramond field},
author = {Sayan Kar and Parthasarathi Majumdar and Soumitra SenGupta and Saurabh Sur},
journal= {arXiv preprint arXiv:hep-th/0109135},
year = {2009}
}
Comments
9 pages, Revtex, no figures