Chiral Anomalous Dispersion
High Energy Physics - Theory
2018-04-04 v1 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
The linearized Einstein equation describing graviton propagation through a chiral medium appears to be helicity dependent. We analyze features of the corresponding spectrum in a collision-less regime above a flat background. In the long wave-length limit, circularly polarized metric perturbations travel with a helicity dependent group velocity that can turn negative giving rise to a new type of an anomalous dispersion. We further show that this chiral anomalous dispersion is a general feature of polarized modes propagating through chiral plasmas extending our result to the electromagnetic sector.
Keywords
Cite
@article{arxiv.1712.03956,
title = {Chiral Anomalous Dispersion},
author = {Andrey Sadofyev and Srimoyee Sen},
journal= {arXiv preprint arXiv:1712.03956},
year = {2018}
}
Comments
13 pages;