Helical Shear-Flow Instability in Phase-Separated Two-Component Bose-Einstein Condensates
Helical Shear-Flow Instability in Phase-Separated Two-Component Bose-Einstein Condensates
复制标题
相分离二组分玻色-爱因斯坦凝聚体中的螺旋剪切流不稳定性
DOI：
10.1007/s10909-012-0801-6
复制
发表时间：
2013
影响因子：
2
通讯作者：
竹内宏光
中科院分区：
文献类型：
--
作者：
林真佑;石野隼伍;坪田誠;竹内宏光
从理论上研究了相分离的两组分玻色-爱因斯坦凝聚体中的螺旋剪切流不稳定性，其中一组分形成了量子化的涡旋，另一组分以匀速局域在涡核中。平面界面的分析适用于半径足够大的圆形界面。另一方面，当界面半径较小时，不适用于平面界面的分析，外涡流对稳定性的影响较大。采用界面波模型和Bogoliubov-de Gennes模型研究了螺旋剪切流动的不稳定性。
We theoretically study the helical shear-flow instability in phase-separated two-component Bose-Einstein condensates by considering the case where one component forms a quantized vortex and the other component is localized in the vortex core with an uniform velocity. The analysis for a flat interface is applicable for a sufficiently large radius of the circular interface. On the other hand, when the interface radius is small, the analysis for flat interface is inapplicable and the instability is much affected by the outer vortex. The helical shear-flow instability is investigated with the interface wave model and the Bogoliubov-de Gennes model.