Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Topological transport from a black hole   In this paper the low temperature zero-frequency transport in a
2+1-dimensional theory dual to a dyonic black hole is discussed. It is shown
that transport exhibits topological features: the transverse electric and heat
conductivities satisfy the Wiedemann-Franz law of free electrons; the direct
heat conductivity is measured in units of the central charge of the dual CFT,
while the direct electric conductivity vanishes; the thermoelectric
conductivity is non-zero at vanishing temperature, while the linear in
temperature behaviour, controlled by the Mott relation, is subleading. Provided
that the entropy of the black hole, and the dual system, is non-vanishing at
zero temperature, the observations indicate that the dyonic black hole
describes a "classical" limit of a highly degenerate topological state, in
which the black hole charge measures the density of excited non-abelian
quasiparticles.

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The categories of this paper are: supr-con
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
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The categories of this paper are: alg-geom
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an