Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Collective excitations in Bose-Einstein condensates in triaxially
  anisotropic parabolic traps   The wave equation of low-frequency density waves in Bose-Einstein condensates
at vanishing temperature in arbitrarily anisotropic harmonic traps is separable
in elliptic coordinates, provided the condensate can be treated in the
Thomas-Fermi approximation. We present a complete solution of the mode
functions, which are polynomials of finite order, and their eigenfrequencies
which are characterized by three integer quantum numbers.

8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs