Nonlinear localized eigenmodes for a Bose-Einstein condensate in a double-well potential

作者：Xie, Qiongtao^*; Liu, Xiaoliang; Rong, Shiguang

来源：Modern Physics Letters B, 2015, 29(25): 1550150.

DOI：10.1142/S021798491550150X

• Bose-Einstein condensates
• nonlinear localized modes
• double-well potential

In this paper, we investigate the nonlinear localized eigenmodes for a Bose-Einstein condensate in a double-well potential. For a specific choice of the potential parameters, certain exact analytical solutions for nonlinear localized eigenmodes are presented. By applying the linear stability analysis, the stability regions of these exact nonlinear localized eigenmodes are obtained numerically. It is shown that under certain conditions, the unstable nonlinear localized modes display the breathing behavior characterized by repeated appearance of symmetric and asymmetric distributions in the two potentials. This breathing behavior is shown to arise from the symmetry breaking for these nonlinear localized eigenmodes.

• 出版日期2015-9-20
• 单位湖南科技大学; 中南大学; 湖南师范大学; 海南师范大学