Cold Atoms, Cold Molecules, and Spectroscopy

这个关于理论和计算工作的提议有两个组成部分，都与冷原子的性质有关。第一部分的目的是将我们对零温玻色凝聚中的相关联的理解扩展到双(并最终是多个)势垒组态。我们的目标是了解作为势垒高度、原子数目和相互作用的函数，通过势垒的相位相关性持续到什么程度。第二部分解决了从冷原子开始生产电子、振动、旋转和平移冷分子的尝试中的一个瓶颈。也就是说，即使多个激光器可以组装和稳定，中频对于许多碱性硅藻类来说也是未知的，因为分子结构被高度扰动，还没有被分析。RBC特别令人感兴趣，因为这两个原子都可以用激光有效冷却，而且耶鲁大学目前正在努力生产超冷的基态RBC分子。我们从我们最近对红细胞光谱数据的分析中提供了关于最低激发态的信息，从而帮助了这一努力。

This proposal for theoretical and computational work has two components, both relatedto the properties of cold atoms. The goal of the first part is to extend our understandingof phase correlations in Bose condensates at zero temperature to double (and eventuallymultiple) well configurations. The objective is to learn to what extent phase correlation persiststhrough a barrier, as a function of barrier height, atom number, and interactions. The second part addresses a bottleneck in attempts to produce electronically, vibrationally,rotationally and translationally cold molecules by starting with cold atoms. Namely,even if the multiple lasers can be assembled and stabilized, the intermediate frequencies arenot known for many alkali diatomics because the molecular structure, being highly perturbed,has not been analyzed. RbCs is of especial interest because both atoms can beefficiently cooled with laser light, and because there are presently efforts at Yale to produceultracold ground state RbCs molecules. We have assisted in this effort by providinginformation on the lowest excited states from our recent analysis of RbCs spectral data.