论文标题
超低原子 - 分子碰撞中的三位生光照相
Triatomic Photoassociation in an Ultracold Atom-Molecule Collision
论文作者
论文摘要
自实验进步使这种物种的冷却和捕获以来，中性原子和分子的超低碰撞引起了人们的极大关注。这项研究是对碱原子与双原子分子之间低能碰撞的理论研究，并伴随着从外部电磁场吸收光子。处理两种物种之间的远距离相互作用，包括原子自旋轨道相互作用。三局综合体的远程势能曲线是逼真的，而在范德华长度上应用不同的边界条件来模仿短期行为。原子与二聚体碰撞的光相关（PA）速率是针对不同碱原子（即Na和cs）的。这项研究中开发的模型还针对通过PA的CS $ _3 $复合物的形成速率的已知结果进行了测试，即与Rios等人，PRL 115，073201（2015）所做的工作进行比较，结果总体上是很好的一致性。
Ultracold collisions of neutral atoms and molecules have been of great interest since experimental advances enabled the cooling and trapping of such species. This study is a theoretical investigation of a low-energy collision between an alkali atom and a diatomic molecule, accompanied by absorption of a photon from an external electromagnetic field. The long-range interaction between the two species is treated, including the atomic spin-orbit interaction. The long-range potential energy curves for the triatomic complex are calculated in realistic detail, while the short-range behavior is mimicked by applying different boundary conditions at the van der Waals length. The photoassociation (PA) rate of an atom colliding with a dimer is calculated for different alkali atoms, namely Na and Cs. The model developed in this study is also tested against known results for the formation rate of the Cs$_3$ complex via PA, namely to compare with the work done by Rios et al., PRL 115, 073201 (2015), and the results are in generally good agreement.
