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arXiv · 1712.03956

Chiral Anomalous Dispersion

Andrey Sadofyev·Srimoyee Sen
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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.

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Andrey Sadofyev, Srimoyee Sen. 2017-12-11. Chiral Anomalous Dispersion. https://doi.org/10.1007/jhep02(2018)099

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