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arXiv 2203.01211cond-mat.quant-gascond-mat.stat-mechmath-phmath.MP
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一维玻色气体中的多量子暗孤子

Multi-Quantum Dark Solitons in One-Dimensional Bose Gas

Yuki Ishiguro, Jun Sato, Katsuhiro Nishinari

摘要:

量子和经典可积系统具有共同的数学结构,它们所出现的现象是相互关联的。孤子普遍存在于经典可积系统中,也存在于量子可积系统中。本文研究了具有排斥δ函数相互作用的一维玻色气体中的量子-经典对应,给出了对应于多暗孤子的量子态。利用精确方法计算了多量子暗孤子态密度分布的时间演化。在密度分布中观察到了类似于经典暗孤子的局域孤波。我们观察到量子暗孤子的碰撞,并表明它们表现出经典孤子的性质:对散射的稳定性和由于相互作用而引起的位置偏移。

英文摘要:

Quantum and classical integrable systems share common mathematical structures, and the phenomena appearing in them are interrelated. Solitons, which universally appear in classical integrable systems, also appear in quantum integrable systems. Here, we consider quantum-classical correspondence in a one-dimensional Bose gas with repulsive delta-function interaction and present quantum states corresponding to multi-dark solitons. Using an exact method, we compute the time evolution of the density profile in the multi-quantum dark soliton states. Localized solitary waves that behave like classical dark solitons are observed in the density profile. We observe collisions of quantum dark solitons and show that they exhibit the properties of classical solitons: stability against scatterings and position shifts due to interactions.

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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