Controlling the collision between two solitons in the condensates by a double-barrier potential

doi:10.1088/1674-1056/20/8/080502

Abstract We present an analytical solution of two solitons of Bose—Einstein condensates trapped in a double-barrier potential by using a multiple-scale method. In the linear case, we find that the stable spots of the soliton formation are at the top of the barrier potential and at the region of barrier potential absence. For weak nonlinearity, it is shown that the height of the barrier potential has an important effect on the dark soliton dynamical properties. Especially, in the case of regarding a double-barrier potential as the output source of the solitons, the collision spots between two dark solitons can be controlled by the height of the barrier potential.

Keywords: Bose—Einstein condensates solitons double-barrier potential

Received: 18 December 2010
Revised: 04 March 2011
Accepted manuscript online:

PACS:	05.30.Jp	(Boson systems)
	02.90.+p	(Other topics in mathematical methods in physics)
	11.10.Lm	(Nonlinear or nonlocal theories and models)

Fund: Project supported by the Science Research Foundation of the Education Bureau of Hunan Province of China (Grant No. 09C227).

Cite this article:

Li Zhi-Jian(李志坚) and Li Jin-Hui(李锦茴) Controlling the collision between two solitons in the condensates by a double-barrier potential 2011 Chin. Phys. B 20 080502

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