Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonlinear dynamics of a spin-orbit-coupled Bose-Einstein condensate   Single-particle dynamics of a spin-orbit-coupled Bose-Einstein condensate has
recently been investigated in experiments that explore the physics of
Landau-Zener tunneling and of the Zitterbewegung. In this paper, we study the
influence of a nonlinearity due to interactions on these dynamics and show that
the dispersion relation develops interesting loop strucures. The atoms can move
along the nonlinear dispersion curve in the presence of a weak acceleration
force and we show that the loops lead to straightforward nonlinear Landau-Zener
tunneling. However, we find that for the Zitterbewegung, induced by a sudden
quench in the spin-orbit coupling parameters, the nonlinear dispersion is
irrelevant.

12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org