期刊
PHYSICAL REVIEW LETTERS
卷 111, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.053202
关键词
-
资金
- INFM (MICRA)
- ERC [203479, 247371, 258325]
- Agence Nationale de la Recherche [ANR-12-BS04-0020-01]
- MIUR (PRIN FBKLNN)
- European Research Council (ERC) [203479, 247371, 258325] Funding Source: European Research Council (ERC)
- Agence Nationale de la Recherche (ANR) [ANR-12-BS04-0020] Funding Source: Agence Nationale de la Recherche (ANR)
We measure the critical scattering length for the appearance of the first three-body bound state, or Efimov three-body parameter, at seven different Feshbach resonances in ultracold K-39 atoms. We study both intermediate and narrow resonances, where the three-body spectrum is expected to be determined by the nonuniversal coupling of two scattering channels. Instead, our observed ratio of the three-body parameter with the van der Waals radius is approximately the same universal ratio as for broader resonances. This unexpected observation suggests the presence of a new regime for three-body scattering at narrow resonances.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据