Dynamics of Bose–Einstein condensate in a harmonic potential and a Gaussian energy barrier

doi:10.1088/1674-1056/20/1/010311

Abstract We have studied the dynamics of Bose–Einstein condensate by solving numerically the Gross-Pitaevskii (GP) 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.

Keywords: Gross–Pitaevskii equation Gaussian energy barrier tunneling effect

Received: 12 April 2010
Revised: 30 July 2010
Accepted manuscript online:

PACS:	03.75.Nt	(Other Bose-Einstein condensation phenomena)
	05.30Jp

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10974068).

Cite this article:

Hua Wei(花巍), Li Bin(李彬), and Liu Xue-Shen(刘学深) Dynamics of Bose–Einstein condensate in a harmonic potential and a Gaussian energy barrier 2011 Chin. Phys. B 20 010311

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