Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modulation of the photonic band structure topology of a honeycomb
  lattice in an atomic vapor   In an atomic vapor, a honeycomb lattice can be constructed by utilizing the
three-beam interference method. In the method, the interference of the three
beams splits the dressed energy level periodically, forming a periodic
refractive index modulation with the honeycomb profile. The energy band
topology of the honeycomb lattice can be modulated by frequency detunings,
thereby affecting the appearance (and disappearance) of Dirac points and cones
in the momentum space. This effect can be usefully exploited for the generation
and manipulation of topological insulators.

8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin