Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Casimir Effects: An Optical Approach I. Foundations and Examples   We present the foundations of a new approach to the Casimir effect based on
classical ray optics. We show that a very useful approximation to the Casimir
force between arbitrarily shaped smooth conductors can be obtained from
knowledge of the paths of light rays that originate at points between these
bodies and close on themselves. Although an approximation, the optical method
is exact for flat bodies, and is surprisingly accurate and versatile. In this
paper we present a self-contained derivation of our approximation, discuss its
range of validity and possible improvements, and work out three examples in
detail. The results are in excellent agreement with recent precise numerical
analysis for the experimentally interesting configuration of a sphere opposite
an infinite plane.

1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex