Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Canonical quantization of electromagnetic field in the presence of
  absorbing bi-anisotropic multilayer magnetodielectric media   A bi-anisotropic magnetodielectric medium is modeled by two independent set
of three dimensional harmonic oscillators .A fully canonical quantization of
electromagnetic field is demonstrated in the presence of a bi-anisotropic
magnetodielectric medium. The electric and magnetic polarization fields of the
medium are obtained in terms of the dynamical variable modeling the medium. The
Heisenberg equations of the system are solved for a multilayer bi-anisotropic
magnetodielectric medium.

27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph