Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Collective modes of a quasi two-dimensional Bose condensate in large gas
  parameter regime   We have theoretically studied the collective modes of a quasi two-dimensional
(Q2D) Bose condensate in the large gas parameter regime by using a formalism
which treats the interaction energy beyond the mean-field approximation. In the
calculation we use the perturbative expansion for the interaction energy by
incorporating the Lee, Huang and Yang (LHY) correction term. The results show
that incorporation of this higher order term leads to detectable modifications
in the mode frequencies.

28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics