arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2409.18883nlin.PScond-mat.quant-gas
收藏

模态不稳定性与深准一维光晶格中的离散量子滴

Modulational instability and discrete quantum droplets in a deep quasi-one-dimensional optical lattice

Physical-Technical Institute of the Uzbek Academy of Sciences(乌兹别克斯坦科学院物理技术研究所);National University of Uzbekistan(乌兹别克斯坦国立大学)

Sherzod R. Otajonov, Bakhram A. Umarov, Fatkhulla Kh. Abdullaev

AI总结:

本文研究了深准一维光晶格中模态不稳定性及离散量子滴的性质,通过分析不同量子滴解的存在及其稳定性,验证了理论预测与数值模拟的一致性。

摘要:

我们研究了准一维离散格鲁宁-皮塔耶夫斯基方程中模态不稳定性及离散呼吸子的性质。在参数空间中确定了模态不稳定性条件和非线性平面波的不稳定性区域。我们利用Page方法和变分法分析了不同量子滴解的存在,包括跨站点、 onsite、前型、平坦顶和暗局域模式。通过线性稳定性分析和数值模拟检查其稳定性。分析预测与数值模拟结果一致。

英文摘要:

We study the properties of modulational instability and discrete breathers arising in a quasi-one-dimensional discrete Gross-Pitaevskii equation with Lee-Huang-Yang corrections. Conditions for modulation instability and instability regions of nonlinear plane waves are determined in parameter space. We analytically investigate the existence of different quantum droplet solutions, including intersite, onsite, front-like, flat-top and dark localized modes, using the Page method and variational approach. Their stability is checked using linear stability analyses and numerical simulations. The analytical predictions corroborated with the numerical simulations.

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。

↑