Virial expansion of a harmonically trapped Fermi gas across a narrow Feshbach resonance
文献类型：期刊论文
| 作者 | Peng, Shi-Guo1; Zhao, Shuo-Han1; Jiang, Kaijun1,2 |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2014-01-06 |
| 卷号 | 89期号:1 |
| 英文摘要 | We theoretically investigate the high-temperature thermodynamics of a harmonically trapped Fermi gas across a narrow Feshbach resonance by using the second-order quantum virial expansion, and point out some new features compared to the broad resonance. The interatomic interaction is modeled by the pseudopotential with an additional parameter, i.e., the effective range, to characterize the narrow-resonance width. Deep inside the width of a narrow Feshbach resonance, we find the second virial coefficient evolves with the effective range from the well-known universal value 1/4 in the broad-resonance limit to one another value 1/2 in the narrow-resonance limit. This means the Fermi gas interacts more strongly at the narrow resonance. In addition, far beyond the resonance width, we find the harmonically trapped Fermi gas still manifests an appreciable interaction effect across a narrow Feshbach resonance, which is contrary to our knowledge of the broad Feshbach resonance. All our results can be directly tested in current narrow Feshbach resonance experiments, which are generally carried out in a harmonic trap. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Optics ; Physics, Atomic, Molecular & Chemical |
| 研究领域[WOS] | Optics ; Physics |
| 关键词[WOS] | THERMODYNAMICS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000332163400010 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/1338]  |
| 专题 | 武汉物理与数学研究所_原子分子光物理研究部 |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Chinese Acad Sci, Ctr Cold Atom Phys, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Peng, Shi-Guo,Zhao, Shuo-Han,Jiang, Kaijun. Virial expansion of a harmonically trapped Fermi gas across a narrow Feshbach resonance[J]. PHYSICAL REVIEW A,2014,89(1). |
| APA | Peng, Shi-Guo,Zhao, Shuo-Han,&Jiang, Kaijun.(2014).Virial expansion of a harmonically trapped Fermi gas across a narrow Feshbach resonance.PHYSICAL REVIEW A,89(1). |
| MLA | Peng, Shi-Guo,et al."Virial expansion of a harmonically trapped Fermi gas across a narrow Feshbach resonance".PHYSICAL REVIEW A 89.1(2014). |
入库方式： OAI收割
来源：武汉物理与数学研究所
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