Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 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.

25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
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The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
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The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th