Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chiral Magnetic Wave   We consider a relativistic plasma containing charged chiral fermions in an
external magnetic field, e.g a chirally symmetric quark-gluon plasma created in
relativistic heavy ion collisions. We show that triangle anomalies imply the
existence of a new type of collective gapless excitation in this system that
stems from the coupling between the density waves of the electric and chiral
charges; we call it "the Chiral Magnetic Wave" (CMW). The CMW exists even in a
neutral plasma, i.e. in the absence of the axial and vector chemical
potentials. We demonstrate the existence of CMW and study its properties using
three different approaches: i) relativistic magnetohydrodynamics; ii)
dimensional reduction to $(1+1)$ Sine-Gordon model, appropriate in a strong
magnetic field; and iii) holographic QCD (Sakai-Sugimoto model), appropriate at
strong coupling. We also briefly discuss the phenomenological implications of
the CMW for heavy ion collisions.

11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph