Three-Body Recombination of 6Li Atoms with Large Negative Scattering Lengths

被引：44
作者：
Braaten, Eric [1 ]
Hammer, H. -W. [2 ,3 ]
Kang, Daekyoung [1 ]
Platter, Lucas [1 ]
机构：
[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
[2] Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany
[3] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany
来源：
PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 07期
关键词：
ENERGY-LEVELS; FORCES;
D O I：
10.1103/PhysRevLett.103.073202
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The three-body recombination rate at threshold for distinguishable atoms with large negative pair scattering lengths is calculated in the zero-range approximation. The only parameters in this limit are the 3 scattering lengths and the Efimov parameter, which can be complex-valued. We provide semianalytic expressions for the cases of 2 or 3 equal scattering lengths, and we obtain numerical results for the general case of 3 different scattering lengths. Our general result is applied to the three lowest hyperfine states of Li-6 atoms. Comparisons with recent experiments provide indications of loss features associated with Efimov trimers near the 3-atom threshold.
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页数：4
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