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arXiv 1106.0802cond-mat.quant-gasquant-ph
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实时随机方法计算玻色-爱因斯坦凝聚体的隧穿时间

Tunneling Time of Bose-Einstein Condensates on Real Time Stochastic Approach

K. Kobayashi, M. Inoue, Y. Nakamura, K. Honda, Y. Yamanaka

摘要:

用实时随机方法研究了玻色-爱因斯坦凝聚体(BEC)的隧穿过程,揭示了隧穿时间的一些性质。一个重要的结果是隧穿时间随着原子间排斥作用的增强而减小。此外,在强相互作用区的隧穿时间不受势高的影响,并表示为一个几乎恒定的函数。我们也得到了其他相关的时间,如犹豫和相互作用的,并研究它们对相互作用强度的依赖性。最后计算了BEC波包的平均到达时间,并显示了其峰值位置的大位移。

英文摘要:

We study tunneling processes of Bose-Einstein condensate (BEC) on the real time stochastic approach and reveal some properties of their tunneling time. An important result is that the tunneling time decreases as the repulsive interatomic interaction becomes stronger. Furthermore, the tunneling time in a strong interaction region is not much affected by the potential height and is represented by an almost constant function. We also obtain the other related times such as the hesitating and interaction ones and investigate their dependence on the interaction strength. Finally, we calculate the mean arrival time of BEC wave packet and show the large displacement of its peak position.

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。

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