Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lattice symmetries, spectral topology and opto-electronic properties of
  graphene-like materials   The topology of the band structure, which is determined by the lattice
symmetries, has a strong influence on the transport properties. Here we
consider an anisotropic honeycomb lattice and study the effect of a
continuously deformed band structure on the optical conductivity and on
diffusion due to quantum fluctuations. In contrast to the behavior at an
isotropic node we find super- and subdiffusion for the anisotropic node. The
spectral saddle points create van Hove singularities in the optical
conductivity, which could be used to characterize the spectral properties
experimentally.

27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
2
The categories of this paper are: math