Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interference phenomena in the photon production between two oscillating
  walls   We study the photon production in a 1D cavity whose left and right walls
oscillate with the frequency $\Omega_{L} $ and $\Omega_{R} $, respectively. For
$\Omega_{L} \neq \Omega_{R}, $ the number of generated photons by the
parametric resonance is the sum of the photon numbers produced when the left
and the right wall oscillates separately. But for $\Omega_{L} = \Omega_{R} $,
the interference term proportional to $\cos \phi $ is found additionally, where
$\phi $ is the phase difference between two oscillations of the walls.

21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
29
The categories of this paper are: funct-an