Nonlinear transport of Bose-Einstein condensates in a double barrier potential  

作　　者：方见树 

机构地区：[1]Institute of Physics, Hunan University of Technology [2]Department of Physics, Hunan University of Technology

出　　处：《Chinese Physics B》2008年第11期3996-4001,共6页中国物理B（英文版）

基　　金：Project supported by the Key Research Foundation of Education Bureau of Hunan Province, China (Grant No 08A015);the Natural Science Foundation of Hunan Province, China (Grant No 06JJ2014);the National Natural Science Foundation of China (Grant No 10575034)

摘　　要：The stable nonlinear transport of the Bose-Einstein condensates through a double barrier potential in a waveguide is studied. By using the direct perturbation method we have obtained a perturbed solution of Cross-Pitaevskii equation. Theoretical analysis reveals that this perturbed solution is a stable periodic solution, which shows that the transport of Bose-Einstein condensed atoms in this system is a stable nonlinear transport. The corresponding numerical results are in good agreement with the theoretical analytical results.The stable nonlinear transport of the Bose-Einstein condensates through a double barrier potential in a waveguide is studied. By using the direct perturbation method we have obtained a perturbed solution of Cross-Pitaevskii equation. Theoretical analysis reveals that this perturbed solution is a stable periodic solution, which shows that the transport of Bose-Einstein condensed atoms in this system is a stable nonlinear transport. The corresponding numerical results are in good agreement with the theoretical analytical results.

关 键 词：the nonlinear transport Bose-Einstein condensate perturbed solution 

分 类 号：O469[理学—凝聚态物理]