论文标题
超低碱金属分子和原子之间碰撞中的远距离状态和Feshbach共振
Long-range states and Feshbach resonances in collisions between ultracold alkali-metal diatomic molecules and atoms
论文作者
论文摘要
我们认为，在单线状态和碱金属原子中由碱金属分子形成的复合物的远程状态。我们探索了有关此类系统的哈密顿量的结构，以及存在的六个角动量之间的耦合。我们考虑远程状态的模式和密度，以及哈密顿量中的术语可能引起feshbach共振，当状态跨阈值作为磁场的函数。我们提出了$^{40} $ k $^{87} $ rb+$^{87} $ rb的案例研究。由于具有旋转和/或超精细激发的远距离状态，我们显示了多种类型的共振，并考虑它们存在于低至中等磁场处的可能性。
We consider the long-range states expected for complexes formed from an alkali-metal diatomic molecule in a singlet state and an alkali-metal atom. We explore the structure of the Hamiltonian for such systems, and the couplings between the six angular momenta that are present. We consider the patterns and densities of the long-range states, and the terms in the Hamiltonian that can cause Feshbach resonances when the states cross threshold as a function of magnetic field. We present a case study of $^{40}$K$^{87}$Rb+$^{87}$Rb. We show multiple types of resonance due to long-range states with rotational and/or hyperfine excitation, and consider the likelihood of them existing at low to moderate magnetic fields.
