Dynamics of Dark Solitons in Superfluid Fermi Gases  

作　　者：QI Xiu-Ying ZHANG Ai-Xia XUE Ju-Kui 祁秀英;张爱霞;薛具奎(Key Laboratory of Atomic&Molecular Physics and Functional Materials of Gansu Province,College of Physics and Electronics Engineering,Northwest Normal University,Lanzhou 730070)

机构地区：[1]Key Laboratory of Atomic&Molecular Physics and Functional Materials of Gansu Province,College of Physics and Electronics Engineering,Northwest Normal University,Lanzhou 730070

出　　处：《Chinese Physics Letters》2013年第11期25-28,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 11274255 and 11305132;the Natural Science Foundation of Gansu Province under Grant No 2011GS04358;Creation of Science and Technology of Northwest Normal University under Grant Nos NWNU-KJCXGC-03-48 and NWNU-LKQN-12-12.

摘　　要：We present an analytical study on the dynamics of dark solitons in superfluid Fermi gases.By using the modified lens-type transformation,the dynamical equation of superfluid Fermi gases is reduced to a modified one-dimensional nonlinear Shor?dinger equation(NLSE).Once again,by using the reductive perturbation method,the NLSE is reduced to a standard Korteweg-de Vries equation which may be useful for understanding the dynamics of dark solitons in superfluid Fermi gases.The existence of dark soliton solutions in the Fermi gases is provided.In particular,we show that,by manipulating and controlling the scattering length between Fermi atomics of different components and the external potential,the soliton's parameters(amplitude and width)can be changed in a controllable way.

关 键 词：FERMI SOLITON EQUATION 

分 类 号：O17[理学—数学]