Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The effect of permanent dipole moment on the polar molecule cavity
  quantum electrodynamics   A dressed-state perturbation theory beyond the rotating waveapproxi-mation
(RWA) is presented to investigate the interaction between a two level
electronic transition of the polar molecules and a quantized cavity field.
Analytical expressions can be explicitly derived for both the ground- and
excited-state-energy spectrums and wave functions of the system, where the
contribution of permanent dipole moments (PDM) and the counter-rotating wave
term (CRT) can be shown separately. The validity of these explicit results is
discussed by comparing with the direct numerical simulation. Comparing to CRT
coupling, PDM results in the coupling of more dressed states and the energy
shift proportional to the square of the normalized permanent dipole difference,
and a greater Bloch-Siegert shift could be produced in giant dipole molecule
cavity QED. In addition, our method could also be extended to the solution of
two-level atom Rabi model Hamiltonian beyond the RWA.

22
The categories of this paper are: chao-dyn
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The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
19
The categories of this paper are: eess
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
2
The categories of this paper are: math