Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stability and collapse of a coupled Bose-Einstein condensate   The dynamics of a coupled Bose-Einstein condensate involving trapped atoms in
two quantum states is studied using the time-dependent Gross-Pitaevskii
equation including an interaction which can transform atoms from one state to
the other. We find interesting oscillation of the number of atoms in each of
the states. For all repulsive interactions, stable condensates are formed. When
some of the atomic interactions are attractive, the possibility of collapse is
studied by including an absorptive contact interaction and a quartic three-body
recombination term. One or both components of the condensate may undergo
collapse when one or more of the nonlinear terms are attractive in nature.

22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th