原子 Efimov 物理中普适三体参数的物理起源
量子气体
2021-10-22 v3 原子物理
量子物理
摘要
我们探讨了固定 Efimov 区三原子系统能谱的普适三体参数的微观起源。我们将该参数认定为 van der Waals 两体关联，这种关联导致当三个原子进入 van der Waals 长度距离内时，三原子系统发生形变，从而有效地阻止它们进一步靠近，这是由于与该三体形变相关的动能代价所致。这种形变机制解释了在三原子共振处散射长度与 van der Waals 长度之比的普适性，该现象已在多项实验中观察到并得到数值计算的证实。
引用
@article{arxiv.1208.3912,
title = {Physical Origin of the Universal Three-body Parameter in Atomic Efimov Physics},
author = {Pascal Naidon and Shimpei Endo and Masahito Ueda},
journal= {arXiv preprint arXiv:1208.3912},
year = {2021}
}
备注
10 pages, 6 figures ; several corrections, one figure removed and one figure added with respect to v2. This is a corrected version with respect to the published article: curves corrected in the last figure (hyper-radial potential) ; removed an incorrect discussion and figure on the hyperangular distribution and average hyperangle (see erratum of the published article)