Spontaneous dissociation of long-range Feshbach molecules.
Spontaneous dissociation of long-range Feshbach molecules.
复制标题
长程 Feshbach 分子的自发解离。
DOI：
10.1103/physrevlett.94.020402
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发表时间：
2004
影响因子：
8.6
通讯作者：
P. Julienne
中科院分区：
文献类型：
--
作者：
T. Köhler;E. Tiesinga;P. Julienne
我们研究了冷原子气体中双原子分子通过磁可调谐Feshbach共振产生的自发解离。我们给出了这些分子寿命的普遍公式，该公式将这些分子的衰变与非弹性自旋弛豫的散射长度和损失率常数联系起来。我们的普遍处理以及我们对85Rb二聚体的精确耦合通道计算预测，当散射长度增加时，衰变将在几个数量级上被抑制。我们的预测与最近对85Rb(2)寿命的测量很好地一致。
We study the spontaneous dissociation of diatomic molecules produced in cold atomic gases via magnetically tunable Feshbach resonances. We provide a universal formula for the lifetime of these molecules that relates their decay to the scattering length and the loss rate constant for inelastic spin relaxation. Our universal treatment as well as our exact coupled channels calculations for 85Rb dimers predict a suppression of the decay over several orders of magnitude when the scattering length is increased. Our predictions are in good agreement with recent measurements of the lifetime of 85Rb(2).