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arXiv 1802.06471nlin.SI
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旋量玻色-爱因斯坦凝聚体中的孤子和反常波

Solitons and rogue waves in spinor Bose-Einstein condensates

Sitai Li, Barbara Prinari, Gino Biondini

摘要:

本文给出了$F=1$旋量玻色-爱因斯坦凝聚体的单孤子解的一般分类以及新的罗格波解族。这些解决方案是从逆散射变换的聚焦矩阵非线性薛定谔方程模型凝聚的情况下的吸引力的平均场相互作用和铁磁自旋交换相互作用。特别是,我们表明,当没有背景是本,所有的单孤子解决方案可通过酉变换的组合,相反的极化孤子解决方案的单组分BEC可还原。另一方面,我们表明,当一个非零的背景是存在的,并不是所有的矩阵单孤子解决方案是一个简单的组合标量解决方案。结果表明,有些孤子是拓扑孤子,有些是暗-亮孤子。最后,通过对所有解在非零背景下取适当的极限,我们还得到了三个Rogue波族(即,理性)的解决方案,其中两个是新的,以我们所知。

英文摘要:

We present a general classification of one-soliton solutions as well as novel families of rogue-wave solutions for $F=1$ spinor Bose-Einstein condensates (BECs). These solutions are obtained from the inverse scattering transform for a focusing matrix nonlinear Schrödinger equation which models condensates in the case of attractive mean field interactions and ferromagnetic spin-exchange interactions. In particular, we show that, when no background is present, all one-soliton solutions are reducible via unitary transformations to a combination of oppositely-polarized solitonic solutions of single-component BECs. On the other hand, we show that, when a non-zero background is present, not all matrix one-soliton solutions are reducible to a simple combination of scalar solutions. We show that some solitons are topological ones and others are dark-bright solitons. Finally, by taking suitable limits of all the solutions on a non-zero background we also obtain three families of rogue-wave (i.e., rational) solutions, two of which are novel to the best of our knowledge.

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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