Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Role of the relative phase in the merging of two independent
  Bose-Einstein condensates   We study the merging of two independent Bose-Einstein condensates with
arbitrary initial phase difference, in the framework of a one-dimensional
time-dependent Gross-Pitaevskii model. The role of the initial phase difference
in the process is discussed, and various types of phase-sensitive excitations
are identified.

36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
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
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph