Accidental suppression of landau damping of the transverse breathing mode in elongated bose-einstein condensates.
Accidental suppression of landau damping of the transverse breathing mode in elongated bose-einstein condensates.
复制标题
细长玻色-爱因斯坦凝聚中横向呼吸模式的兰道阻尼的意外抑制。
DOI：
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发表时间：
2002
影响因子：
8.6
通讯作者：
E. Zaremba
中科院分区：
文献类型：
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作者：
B. Jackson;E. Zaremba
我们利用有限温度模拟研究了拉长玻色-爱因斯坦凝聚体的横向径向振荡，在最近的一个实验背景下在ENS [F]。雪佛兰、phy。Rev. Lett. 88, 250402(2002)]。实验观测到的模式对应于冷凝物和热云的同相集体振荡。由于观测到的阻尼率很小，我们的模拟结果与实验结果非常吻合。与其他凝聚模式相比，原子间碰撞被发现是这种情况下主要的阻尼机制。
We study transverse radial oscillations of an elongated Bose-Einstein condensate using finite-temperature simulations, in the context of a recent experiment at ENS [F. Chevy, Phys. Rev. Lett. 88, 250402 (2002)]]. The mode observed experimentally corresponds to an in-phase collective oscillation of both the condensate and the thermal cloud. Our simulations are in excellent agreement with experiment, accounting for the very small damping rates observed. In contrast to other condensate modes, interatomic collisions are found to be the dominant damping mechanism in this case.