Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamics of matter-wave solutions of Bose-Einstein condensates in a
  homogeneous gravitational field   We find a matter-wave solution of Bose-Einstein condensates trapped in a
harmonic-oscillator potential and subjected to a homogeneous gravitational
field, by means of the extended tanhfunction method. This solution has as
special cases the bright and dark solitons. We investigate the dynamics and the
kinematics of these solutions, and the role of gravity is sketched. It is shown
that these solutions can be generated and manipulated by controlling the s-wave
scattering length, without changing the strengths of the magnetic and
gravitational fields.

21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th