Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vacuum densities and zero-point energy for fields obeying Robin
  conditions on cylindrical surfaces   The Casimir effect for general Robin conditions on the surface of a cylinder
in $D$-spacetime dimensions is studied for massive scalar field with general
curvature coupling. The energy distribution and vacuum stress are investigated.
We separate volumic and superficial energy contributions, for both interior and
exterior space regions. The possibility that some special conditions may be
energetically singled out is indicated.

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The categories of this paper are: chem-ph
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn