Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: One-dimensional compression of Bose-Einstein condensates by
  laser-induced dipole-dipole interactions   We consider a trapped cigar-shaped atomic Bose-Einstein condensate irradiated
by a single far-off resonance laser polarized along the cigar axis. The
resulting laser induced dipole-dipole interactions between the atoms
significantly change size of the condensate, and can even cause its
self-trapping.

22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol