Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantization of electromagnetic field in inhomogeneous dispersive
  dielectrics   Canonical quantization of electromagnetic field inside the time--spatially
dispersive inhomogeneous dielectrics is presented. Interacting electromagnetic
and matter excitation fields create the closed system, Hamiltonian of which may
be diagonalized by generalized polariton transformation. Resulting dispersion
relations coincide with the classical ones obtained by the solution of wave
equation, the corresponding mode decomposition is, however, orthogonal and
complete in the enlarged Hilbert space.

23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th