Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum and thermal Casimir interaction between a sphere and a plate:
  Comparison of Drude and plasma models   We calculate the Casimir interaction between a sphere and a plate, both
described by the plasma model, the Drude model, or generalizations of the two
models. We compare the results at both zero and finite temperatures. At
asymptotically large separations we obtain analytical results for the
interaction that reveal a non-universal, i.e., material dependent interaction
for the plasma model. The latter result contains the asymptotic interaction for
Drude metals and perfect reflectors as different but universal limiting cases.
This observation is related to the screening of a static magnetic field by a
London superconductor. For small separations we find corrections to the
proximity force approximation (PFA) that support correlations between geometry
and material properties that are not captured by the Lifshitz theory. Our
results at finite temperatures reveal for Drude metals a non-monotonic
temperature dependence of the Casimir free energy and a negative entropy over a
sizeable range of separations.

5
The categories of this paper are: gr-qc
12
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: nlin
1
The categories of this paper are: cs
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The categories of this paper are: bayes-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph