Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Derivative expansion of the electromagnetic Casimir energy for two thin
  mirrors   We extend our previous work on a derivative expansion for the Casimir energy,
to the case of the electromagnetic field coupled to two thin, imperfect
mirrors. The latter are described by means of vacuum polarization tensors
localized on the mirrors. We apply the results so obtained to compute the first
correction to the proximity force approximation to the static Casimir effect.

28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
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The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin