Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Semiclassical wave functions and energy levels of Bose-condensed gases
  in spherically symmetric traps   The WKB-approximation for the Bogoliubov-equations of the quasi-particle
excitations in Bose-gases with condensate is worked out in the case of
spherically symmetric trap potentials on the basis of the resulting
quantization rule. The excitation spectrum is calculated numerically and also
analytically in certain limiting cases. It is found that the energy levels of a
Bohr-Sommerfeld type quantization may be considerably shifted when the
classical turning point gets close to the surface of the condensate.

30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an