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Chiral anomalous dispersion

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.

Identiferoai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/627127
Date16 February 2018
CreatorsSadofyev, Andrey, Sen, Srimoyee
ContributorsUniv Arizona, Dept Phys
PublisherSPRINGER
Source SetsUniversity of Arizona
LanguageEnglish
Detected LanguageEnglish
TypeArticle
Rights© The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0).
Relationhttp://link.springer.com/10.1007/JHEP02(2018)099

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