Dark-soliton dynamics in Bose-Einstein condensates at finite temperature
Dark-soliton dynamics in Bose-Einstein condensates at finite temperature
复制标题
DOI：
10.1103/physreva.75.051601
复制
发表时间：
2006-12
影响因子：
2.9
通讯作者：
B. Jackson;N. Proukakis;C. Barenghi
中科院分区：
文献类型：
--
作者：
B. Jackson;N. Proukakis;C. Barenghi
在有限温度下研究了细长玻色-爱因斯坦凝聚体中暗孤子的动力学。除了准确地再现 Burger 等人的实验中观察到的孤子衰变的所有阶段之外。 [物理。莱特牧师。 83, 5198 (1999)]，我们的数值模拟揭示了一种实验上可访问的参数机制的存在，其中相位印记暗孤子可以在衰变之前执行至少一次完整的轴向振荡。分析了衰变时间尺度对温度和初始孤子深度的依赖性，并量化了原子间碰撞的作用。
The dynamics of a dark soliton in an elongated Bose-Einstein condensate is studied at finite temperatures. In addition to accurately reproducing all stages of the decay of the soliton observed in the experiment of Burger et al. [Phys. Rev. Lett. 83, 5198 (1999)], our numerical simulations reveal the existence of an experimentally accessible parameter regime for which phase-imprinted dark solitons can execute at least one full axial oscillation prior to their decay. The dependence of the decay time scale on temperature and initial soliton depth is analyzed and the role of interatomic collisions quantified.