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.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/627127 |
| Date | 16 February 2018 |
| Creators | Sadofyev, Andrey, Sen, Srimoyee |
| Contributors | Univ Arizona, Dept Phys |
| Publisher | SPRINGER |
| Source Sets | University of Arizona |
| Language | English |
| Detected Language | English |
| Type | Article |
| Rights | © The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0). |
| Relation | http://link.springer.com/10.1007/JHEP02(2018)099 |
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