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arXiv 0708.0896cond-mat.other
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二维凝聚体中双量子化涡旋分裂的长期动力学

Long term dynamics of the splitting of a doubly quantized vortex in a two-dimensional condensate

Halvor M. Nilsen, Emil Lundh

摘要:

研究了囚禁凝聚体中双量子化涡旋分裂的非线性动力学。通过求解Gross-Pitaevskii方程,详细研究了动力学。用非线性三能级系统解释了其主要动力学特征。我们找到了一个解析解的动态特性。结果表明,分裂的时间尺度主要取决于线性系统的不稳定性,而非线性效应起主要作用。

英文摘要:

We study the nonlinear dynamics of the splitting of a doubly quantized vortex in a trapped condensate. The dynamics is studied in detail by solving the Gross-Pitaevskii equation. The main dynamical features are explained in terms of a nonlinear three-level system. We find an analytical solution for the characteristics of the dynamics. It is concluded that the time scale for the splitting is mainly determined by the instability of the linearized system, and nonlinear effects contribute logarithmically.

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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