Sonic horizon dynamics of ultracold Fermi system under elongated harmonic potential
Sonic horizon dynamics of ultracold Fermi system under elongated harmonic potential
复制标题
细长谐波势下超冷费米系统的声速层动力学
DOI：
10.1088/1674-1056/27/10/100312
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发表时间：
2018
影响因子：
1.7
通讯作者：
Shuyu Zhou 周蜀渝
中科院分区：
文献类型：
--
作者：
Ying Wang 王颖;Shuyu Zhou 周蜀渝
我们研究了细长谐波陷阱中超冷原子费米系统中的声视界现象。基于一维 Gross-Pitaevskii 方程模型和变分法结合精确推导方法，我们推导了描述声视界出现和相关霍金辐射温度的解析公式。通过关键物理量的图形演示，我们确定了先前三维 (3D) 超冷原子系统数值研究中报告的特征，证明了此处提出的理论模型的适用性。
We study the phenomena of the sonic horizon in an ultracold atomic Fermi system in an elongated harmonic trap. Based on the one-dimensional Gross–Pitaevskii equation model and variational method combined with exact derivation approach, we derive an analytical formula which describes the occurrence of the sonic horizon and the associated Hawking radiation temperature. Using a pictorial demonstration of the key physical quantities we identify the features reported in prior numerical studies of a three-dimensional (3D) ultracold atomic system, proving the applicability of the theoretical.model presented here.