Chiral Anomalous Dispersion

Journal Article · 16 February 2018 · Journal of High Energy Physics (Online)

DOI: https://doi.org/10.1007/JHEP02(2018)099 · OSTI ID:1423982

Sadofyev, Andrey ^[1]; Sen, Srimoyee ^[2]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
2. Inst. for Nuclear Theory, Seattle, WA (United States); Univ. of Arizona, Tucson, AZ (United States)

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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1423982
• Report Number(s): LA-UR-17-31502; TRN: US1801876
• Journal Information: Journal of High Energy Physics (Online), Vol. 2018, Issue 2; ISSN 1029-8479
• Publisher: Springer BerlinCopyright Statement
• Country of Publication: United States
• Language: English