Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two-dimensional nonlinear vector states in Bose-Einstein condensates   Two-dimensional (2D) vector matter waves in the form of soliton-vortex and
vortex-vortex pairs are investigated for the case of attractive intracomponent
interaction in two-component Bose-Einstein condensates. Both attractive and
repulsive intercomponent interactions are considered. By means of a linear
stability analysis we show that soliton-vortex pairs can be stable in some
regions of parameters while vortex-vortex pairs turn out to be always unstable.
The results are confirmed by direct numerical simulations of the 2D coupled
Gross-Pitaevskii equations.

23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin