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arXiv 0807.2194cond-mat.other
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量子孤子的内部结构和由陷阱打开引起的经典激发

Internal structure of a quantum soliton and classical excitations due to trap opening

Yvan Castin

摘要:

我们解析地解决了两个问题,可能是有用的背景下,最近观察到的物质波亮孤子在一维吸引原子玻色气体。第一个问题严格超出平均场:从Bethe ansatz解中,我们提取了量子孤立子中粒子位置的内部关联函数,即对于固定的质心位置。第二个问题是在大量粒子的极限下解决的,在那里平均场论是渐近正确的:它处理由陷阱的打开所产生的激发的数量,从弱弯曲谐波势中的纯孤子开始。

英文摘要:

We analytically solve two problems that may be useful in the context of the recent observation of matter wave bright solitons in a one-dimensional attractive atomic Bose gas. The first problem is strictly beyond mean field: From the Bethe ansatz solution we extract the internal correlation function of the particle positions in the quantum soliton, that is for a fixed center of mass position. The second problem is solved in the limit of a large number of particles, where the mean field theory is asymptotically correct: It deals with the number of excitations created by the opening of the trap, starting from a pure soliton in a weakly curved harmonic potential.

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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