We analyze the dynamics of a bright soliton in Bose-Einstein condensates (BECs) with time-dependentatomic scattering length in an expulsive parabolic potential.Under a safe range of parameters in which the Gross-Pitae...We analyze the dynamics of a bright soliton in Bose-Einstein condensates (BECs) with time-dependentatomic scattering length in an expulsive parabolic potential.Under a safe range of parameters in which the Gross-Pitaevskii(GP) equation is effective in one dimension,our results show that,the dynamics of the bright soliton can beclassed into two phases,depending on the value of the scattering length.Meanwhile,there exists a critical value of theabsolute value of the atomic scattering length,below which,the dynamics of the bright soliton is very regular.Thosephenomena can be useful for developing concrete applications of the nonlinear matter waves.We also obtain the orbitalequation of the bright soliton and get some interesting data which may be useful for the experimental observation of thebright soliton and the application of the atom laser with manipulated intensity.展开更多
We present a family of the solutions of two-component Bose-Einstein condensates with time-dependentscattering length by means of multiple-scale method.Our numerical calculations show that the collision properties (the...We present a family of the solutions of two-component Bose-Einstein condensates with time-dependentscattering length by means of multiple-scale method.Our numerical calculations show that the collision properties (theposition,the time,and the frequency of the collision) between two solitons can be controlled by the time-dependentinterspecies scattering length.Meanwhile,we also find that the amplitude of the solitons is close related to the timedependentinterspecies scattering length.展开更多
We obtain the integrable relation for the one-dimensional nonlinear Sehrdinger equations which describesthe dynamics of a Bose-Einstein Condensates with time-dependent scattering length in a harmonic potential.The exa...We obtain the integrable relation for the one-dimensional nonlinear Sehrdinger equations which describesthe dynamics of a Bose-Einstein Condensates with time-dependent scattering length in a harmonic potential.The exactone-and two-soliton solutions are constructed analytically by using the Hirota method.Then we further discuss thedynamics of the one soliton and the interactions between two solitons in currently experimental conditions.展开更多
基金Supported by National Natural Science Foundation of China under Grant Nos.90406017 and 60525417the NKBRSF of China under Grant No.2006CB921400
文摘We analyze the dynamics of a bright soliton in Bose-Einstein condensates (BECs) with time-dependentatomic scattering length in an expulsive parabolic potential.Under a safe range of parameters in which the Gross-Pitaevskii(GP) equation is effective in one dimension,our results show that,the dynamics of the bright soliton can beclassed into two phases,depending on the value of the scattering length.Meanwhile,there exists a critical value of theabsolute value of the atomic scattering length,below which,the dynamics of the bright soliton is very regular.Thosephenomena can be useful for developing concrete applications of the nonlinear matter waves.We also obtain the orbitalequation of the bright soliton and get some interesting data which may be useful for the experimental observation of thebright soliton and the application of the atom laser with manipulated intensity.
基金supported by National Natural Science Foundation of China under Grant Nos.90406017 and 60525417the National Key Basic Research Special Foundation of China under Grant Nos.2005CB724508 and 2006CB921400
基金Supported by National Natural Science Foundation of China under Grant No. 11074212the Foundation for the Author of National Excellent Doctoral Dissertation of China under Grant No. 200726the Foundation of Key Laboratory of QET of the Education Bureau of Hunan Province of China under Grant No. 09QNET05
文摘We present a family of the solutions of two-component Bose-Einstein condensates with time-dependentscattering length by means of multiple-scale method.Our numerical calculations show that the collision properties (theposition,the time,and the frequency of the collision) between two solitons can be controlled by the time-dependentinterspecies scattering length.Meanwhile,we also find that the amplitude of the solitons is close related to the timedependentinterspecies scattering length.
基金National Natural Science Foundation of China under Grant Nos.90406017,10740420252,and 60525417the National Key Basic Research Special Foundation of China under Grant Nos.2005CB724508 and 2006CB921400
文摘We obtain the integrable relation for the one-dimensional nonlinear Sehrdinger equations which describesthe dynamics of a Bose-Einstein Condensates with time-dependent scattering length in a harmonic potential.The exactone-and two-soliton solutions are constructed analytically by using the Hirota method.Then we further discuss thedynamics of the one soliton and the interactions between two solitons in currently experimental conditions.
