Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A renormalisation group equation for transport co-efficients in
  (2+1)-dimensions derived from the AdS/CMT correspondence   Within the framework of the AdS/CMT correspondence asymptotically anti-de
Sitter black holes in four space-time dimensions can be used to analyse
transport properties in two space dimensions. A non-linear renormalisation
group equation for the conductivity in two dimensions is derived in this model
and, as an example of its application, both the Ohmic and Hall DC and AC
conductivities are studied in the presence of a magnetic field, using a bulk
dyonic solution of the Einstein-Maxwell equations in asymptotically AdS$_4$
space-time. The ${\cal Q}$-factor of the cyclotron resonance is shown to
decrease as the temperature is increased and increase as the charge density is
increased in a fixed magnetic field. Likewise the dissipative Ohmic
conductivity at resonance increases as the temperature is decreased and as the
charge density is increased. The analysis also involves a discussion of the
piezoelectric effect in the context of the AdS/CMT framework.

15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an