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arXiv 1012.5469cond-mat.other
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光晶格中旋量玻色-爱因斯坦凝聚体的暗孤子相互作用

Dark Soliton Interaction of Spinor Bose-Einstein Condensates in an Optical Lattice

Zai-Dong Li, Qiu-Yan Li

摘要:

研究了光晶格中旋量玻色-爱因斯坦凝聚体的磁孤子动力学,得到了各向异性赝自旋链的有效哈密顿量。本文导出了一个非线性薛定谔方程,并利用Hirota方法得到了精确的磁孤子解。结果表明,在旋量玻色-爱因斯坦凝聚体中产生磁孤子需要临界外场。在实际的实验中,可以通过调节磁场来控制孤子的大小、速度和形状频率。此外,还详细研究了两个孤子的弹性碰撞。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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