Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Is the Casimir effect relevant to sonoluminescence?   The Casimir energy of a solid ball (or cavity in an infinite medium) is
calculated by a direct frequency summation using the contour integration. The
dispersion is taken into account, and the divergences are removed by making use
of the zeta function technique. The Casimir energy of a dielectric ball (or
cavity) turns out to be positive, it being increased when the radius of the
ball decreases. The latter eliminates completely the possibility of explaining,
via the Casimir effect, the sonoluminescence for bubbles in a liquid. Besides,
the Casimir energy of the air bubbles in water proves to be immensely smaller
than the amount of the energy emitted in a sonoluminescent flash. The
dispersive effect is shown to be inessential for the final result.

12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg