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arXiv 1608.02773cond-mat.quant-gascond-mat.str-elcond-mat.supr-con
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通过轨道费什巴赫共振俘获$^{173}$ Yb费米气体

Trapped $^{173}$Yb Fermi gas across an orbital Feshbach resonance

M. Iskin

摘要:

从轨道费什巴赫共振的双带描述出发,在囚禁势为局域密度近似和带内Cooper对为平均场近似的假设下,研究了囚禁$^{173}$ Yb费米气体的超流性质.特别地,我们研究了由带间失谐能引起的对断裂效应与由温度同时引起的对断裂和热展宽效应之间的竞争和相互作用。我们预测了几个实验签名,直接由这种相互作用,包括超流和正常相的空间分离的陷阱内,并可能在探测这些系统中的双带超流性发挥决定性作用。

英文摘要:

Starting with the two-band description of an orbital Feshbach resonance, we study superfluid properties of a trapped $^{173}$Yb Fermi gas under the assumptions of a local-density approximation for the trapping potential and a mean-field approximation for the intra-band Cooper pairings. In particular, we investigate the competition and interplay between the pair-breaking effect that is caused by the inter-band detuning energy, and the pair-breaking and thermal-broadening effects that are simultaneously caused by the temperature. We predict several experimental signatures that are directly caused by this interplay including a spatial separation of superfluid and normal phases within the trap, and could play decisive roles in probing two-band superfluidity in these systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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