Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Floquet dynamics in two-dimensional semi-Dirac semimetals and
  three-dimensional Dirac semimetals   We study the photoresponse of two-dimensional semi-Dirac semimetals and
three-dimensional Dirac semimetals to off-resonant circularly polarized light.
For two-dimensional semi-Dirac semimetals we find that incident light does not
open a gap in the spectrum, in contrast to the case of purely linear
dispersion. For the three-dimensional case we find that applying a circularly
polarized light, one can tune from a trivial insulator to three-dimensional
Dirac semimetal with an inverted gap. We propose and show that application of
light leads to an intriguing platform for generation, motion and merging of
three-dimensional Dirac points.

2
The categories of this paper are: math
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ