arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1402.1895cond-mat.quant-gas
收藏

原子玻色-爱因斯坦凝聚体中的暗-亮孤子及其晶格

Dark-bright Solitons and their Lattices in Atomic Bose-Einstein Condensates

D. Yan, F. Tsitoura, P. G. Kevrekidis, D. J. Frantzeskakis

摘要:

在本论文中,我们研究了多组分原子玻色-爱因斯坦凝聚体中出现的一系列不同的定态,即暗-亮孤子及其晶格。后者由具有一般相互作用(非线性)系数$g_{ij}$的耦合Gross-Pitaevskii方程组建模。结果发现,在某些特定的参数范围内,这样的解决方案可以得到解析形式,然而,数值计算,它们存在于一个更广泛的参数范围。研究中的解决方案的许多功能,如他们的分析形式没有陷阱或稳定性/动力学性质的一个暗亮孤子,即使在存在的陷阱得到解析和数值证实。额外的功能,如孤子晶格均匀状态的稳定性或它们的存在/稳定性的陷阱的存在下,数值研究。

英文摘要:

In the present contribution, we explore a host of different stationary states, namely dark-bright solitons and their lattices, that arise in the context of multi-component atomic Bose-Einstein condensates. The latter, are modeled by systems of coupled Gross-Pitaevskii equations with general interaction (nonlinearity) coefficients $g_{ij}$. It is found that in some particular parameter ranges such solutions can be obtained in analytical form, however, numerically they are computed as existing in a far wider parametric range. Many features of the solutions under study, such as their analytical form without the trap or the stability/dynamical properties of one dark-bright soliton even in the presence of the trap are obtained analytically and corroborated numerically. Additional features, such as the stability of soliton lattice homogeneous states or their existence/stability in the presence of the trap, are examined numerically.

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。

↑