Dark soliton interaction of spinor Bose-Einstein condensates in an optical lattice

作者：Li Zai Dong; Li Qiu Yan

来源：Annals of Physics, 2007, 322(8): 1961-1971.

DOI：10.1016/j.aop.2006.11.004

We study the magnetic soliton dynamics of spinor Bose-Einstein condensates in an optical lattice which results in an effective Hamiltonian of anisotropic pseudospin chain. An equation of nonlinear Schrodinger type is derived and exact magnetic soliton solutions are obtained analytically by means of Hirota method. Our results show that the critical external field is needed for creating the magnetic soliton in spinor Bose-Einstein condensates. The soliton size, velocity and shape frequency can be controlled in practical experiment by adjusting the magnetic field. Moreover, the elastic collision of two solitons is investigated in detail.

• 出版日期2007-8
• 单位河北工业大学