Dark soliton interaction of spinor Bose-Einstein condensates in an optical lattice |
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Authors: | Zai-Dong Li |
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Affiliation: | Department of Applied Physics, Hebei University of Technology, Tianjin 300130, China |
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Abstract: | 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 Schrödinger 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. |
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Keywords: | 03.75.Lm 05.30.Jp 67.40.Fd |
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