Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anomalous Surface Conductivity of Weyl Semimetals   We calculate the surface dc conductivity of Weyl semimetals and show that it
contains an anomalous contribution in addition to a Drude contribution from the
Fermi arc. The anomalous part is independent of the surface scattering time,
and appears at nonzero temperature and doping (away from the Weyl nodes),
increasing quadratically with both. The nontrivial coupling between the surface
and the bulk leads to an effective description on the surface that mimics an
interacting two-dimensional fluid in certain regimes of energy, even in the
absence of any explicit scattering on the surface, and is responsible for the
anomalous contribution. Remarkably, in a layered Weyl semimetal, the
temperature dependent part of the surface conductivity at low temperatures is
dominated by the anomalous response which can be probed experimentally to
unravel this unusual behavior.

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The categories of this paper are: comp-gas
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: adap-org
3
The categories of this paper are: physics
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: q-bio
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The categories of this paper are: eess