Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exact treatment of planar two-electron quantum dots: effects of
  anharmonicity on the complexity   Static properties of an anharmonic potential model for planar two-electron
quantum dots are investigated using a method which allows for the exact
representation of the matrix elements, including the full Coulombic electron -
electron interaction. The anharmonic confining potential in combination with
the interparticle Coulomb interaction affects the spectral properties of the
system considerably as it implies total loss of separability of the system.
Properties of the classical phase space, spectral measures of the chaoticity,
as well as localization properties of the eigenstates corroborate this.

3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an