期刊
PHYSICAL REVIEW A
卷 89, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.89.052704
关键词
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资金
- Toledo by NSF [PHY-1306407]
- Tsinghua by NSFC [91121005, 11374176, 11328404]
- MOST Grant of the National Key Basic Research Program of China. [2013CB922004]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1306407] Funding Source: National Science Foundation
We present a quantum theory of ion-atom interactions that is applicable at energies comparable to or smaller than the atomic hyperfine splitting and takes proper account of the effects of identical nuclei. The theory reveals the subtlety and the complexity of cold ion-atom interactions including the change of threshold behavior due to hyperfine splitting and the existence of a large number and a variety of scattering resonances between hyperfine thresholds. We show how this complexity is described, efficiently and at a quantitative level, using a multichannel quantum-defect theory that we present here for ion-atom interactions. Such an efficient description is a key enabling element to understand few-body and many-body quantum systems involving ions.
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