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

作　　者：李志坚 李锦茴 

机构地区：[1]Information Science and Engineering Department,Hunan First Normal University [2]Mathematics and Science Department,Hunan First Normal University

出　　处：《Chinese Physics B》2011年第8期85-89,共5页中国物理B（英文版）

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

摘　　要：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.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.

关 键 词：Bose Einstein condensates SOLITONS double-barrier potential 

分 类 号：O469[理学—凝聚态物理]