Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Holographic charge transport in 2+1 dimensions at finite $N$   We study holographic charge transport in (2+1) dimensions at finite $N$,
whose dual gravity background is given by perturbative black hole solution in
Einstein theory plus cubic terms of Weyl tensor. We consider the higher
derivative corrections to the standard Maxwell action, given by the interacting
terms between the Weyl tensor and the field strength. We calculate the DC
conductivity by using both the membrane paradigm and the Kubo's formula and
find precise agreement. We compute the AC conductivity and find an analog of
the crossover from `metal' to `bad metal' in the low frequency limit. Moreover,
the conductivity becomes a constant in the large frequency limit. We derive two
universal relations for the Green's functions and observe that they are exactly
the same as the infinite $N$ counterparts.

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The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga