Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Casimir Problem of Spherical Dielectrics: A Solution in Terms of
  Quantum Statistical Mechanics   The Casimir energy for a compact dielectric sphere is considered in a novel
way, using the quantum statistical method introduced by H\oye - Stell and
others. Dilute media are assumed. It turns out that this method is a very
powerful one: we are actually able to derive an expression for the Casimir
energy that contains also the negative part resulting from the attractive van
der Waals forces between the molecules. It is precisely this part of the
Casimir energy that has turned out to be so difficult to extract from the
formalism when using the conventional field theoretical methods for a
continuous medium. Assuming a frequency cutoff, our results are in agreement
with those recently obtained by Barton [J. Phys. A: Math. Gen. 32(1999)525].

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The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
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The categories of this paper are: q-bio
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The categories of this paper are: solv-int
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The categories of this paper are: eess
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The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
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The categories of this paper are: econ
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The categories of this paper are: hep-lat
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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: bayes-an