摘要
We have studied the dynamics of Bose-Einstein condensate by solving numerically the Gross-Pitaevskii （CP） equation. We examined the periodic behaviour of the condensate in a shifted harmonic potential, and further demonstrated the tunneling effect of a condensate through a Gaussian energy barrier, which is inserted after the condensate has been excited by shifting the harmonic trapping potential to a side. Moreover, it is shown that the initial condensate evolves dynamically into two separate moving condensates after the tunneling time under certain conditions.
We have studied the dynamics of Bose-Einstein condensate by solving numerically the Gross-Pitaevskii （CP） equation. We examined the periodic behaviour of the condensate in a shifted harmonic potential, and further demonstrated the tunneling effect of a condensate through a Gaussian energy barrier, which is inserted after the condensate has been excited by shifting the harmonic trapping potential to a side. Moreover, it is shown that the initial condensate evolves dynamically into two separate moving condensates after the tunneling time under certain conditions.
基金
Project supported by the National Natural Science Foundation of China(Grant No.10974068)
