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arXiv 1703.04662cond-mat.quant-gasnlin.PSphysics.atom-ph
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由调制不稳定性形成物质波孤子串

Formation of matter-wave soliton trains by modulational instability

Jason H. V. Nguyen, De Luo, Randall G. Hulet

摘要:

非线性系统可以表现出丰富的动态集合,这些动态集合对它们的初始条件具有固有的敏感性。一个这样的例子是调制不稳定性,它被认为是自然界中最普遍的不稳定性之一。利用费什巴赫共振的浅零交叉,我们描述了调制不稳定性及其在玻色-爱因斯坦凝聚体中形成物质波孤子串的作用。我们研究了系统所表现出的普遍标度律,并通过实时成像,解决了一个长期存在的问题,即列车中的孤子是否是通过有效的排斥最近邻相互作用产生的,或者更确切地说,演变成这样的结构。

英文摘要:

Nonlinear systems can exhibit a rich set of dynamics that are inherently sensitive to their initial conditions. One such example is modulational instability, which is believed to be one of the most prevalent instabilities in nature. By exploiting a shallow zero-crossing of a Feshbach resonance, we characterize modulational instability and its role in the formation of matter-wave soliton trains from a Bose-Einstein condensate. We examine the universal scaling laws exhibited by the system, and through real-time imaging, address a long-standing question of whether the solitons in trains are created with effectively repulsive nearest neighbor interactions, or rather, evolve into such a structure.

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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