Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Microscopic toy model for Cavity dynamical Casimir effect   We develop a microscopic toy model for Cavity dynamical Casimir effect (DCE),
namely, the photon generation from vacuum due to a nonstationary dielectric
slab in a fixed single mode cavity. We represent the slab by $N\gg 1$
noninteracting two-level atoms coupled to the field via the standard dipole
interaction. We show that the DCE is contained implicitly in the light-matter
interaction Hamiltonian when its parameters are externally prescribed functions
of time. We also predict several new phenomena, such as saturation of the
photon growth due to effective Kerr nonlinearity, generation of pairs of atomic
excitations instead of photons ("Inverse DCE") and coherent annihilation of
pair of system excitations due to the atomic modulation ("Anti-DCE"). These
results are extended to the circuit QED architecture, where similar effects can
be implemented with a single qubit providing an alternative way to generate
cavity and atom-field entangled states.

19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con