Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hydrodynamic theory of chiral angular momentum generation in metals   We present a hydrodynamic theory to describe a chiral electron system with a
Weyl spin-orbit interaction on a field-theoretic basis. Evaluating the momentum
flux density as a linear response to a driving electric field, we derive an
equation of motion for the orbital angular momentum. It is shown that the
chiral nature leads to a dynamic bulk angular momentum generation by inducing a
global torque as a response to the applied field. The steady state angular
momentum is calculated taking account of rotational viscosity.

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The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: stat
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
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The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: q-bio