Extracting nonlocal interpolaron interactions from collisional dynamics
Extracting nonlocal interpolaron interactions from collisional dynamics
复制标题
从碰撞动力学中提取非局域极子间相互作用
DOI：
10.1103/physreva.103.043334
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发表时间：
2021
影响因子：
2.9
通讯作者：
Iida Kei
中科院分区：
文献类型：
--
作者：
Takahashi Junichi;Tajima Hiroyuki;Nakano Eiji;Iida Kei
本研究开发了一种实验方法来推导在超冷费米或玻色原子（通常称为费米或玻色极化子）捕获气体中杂质之间诱导的相互作用谱。在这种方法中，我们考虑了杂质和原子仅弱相互作用的两体费米或玻色极化子碰撞实验。量子动力学的数值模拟揭示了从几个快照的极化子波包的测量剖面中获得有关两个极化子之间非局部诱导相互作用的信息的可能性。这是因为只要适用相关Schrödinger方程的WKB近似，诱导相互作用的势就会被量子势很好地平衡。
This study develops an experimental method of deducing the profile of interaction induced between impurities in a trapped gas of ultracold Fermi or Bose atoms, which are often referred to as Fermi or Bose polarons. In this method, we consider a two-body Fermi or Bose polaron collision experiment in which impurities and atoms interact only weakly. Numerical simulations of the quantum dynamics reveal the possibility to obtain information regarding the nonlocal-induced interaction between two polarons from a measured profile of the polaron wave packet at several snapshots. This is because the potential of the induced interaction is well balanced by the quantum potential whenever the WKB approximation for the relevant Schrödinger equation is applicable.