arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0908.3733cond-mat.quant-gascond-mat.supr-con
收藏

三组分费米气体中的诱导相互作用和超流transition temperature

Induced interactions and the superfluid transition temperature in a three-component Fermi gas

J. -P. Martikainen, J. J. Kinnunen, P. Torma, C. J. Pethick

摘要:

我们研究了多体效应对三组分费米混合物中费米子有效相互作用的影响。我们发现,有效的相互作用引起的第三个组件可以导致一个相图不同的预测,如果与第三个组件的相互作用被忽略。因此,在限制势中,即使组分的数量相等,也会出现超流壳结构。我们还发现了一个临界温度的BCS转变在一个6Li混合物,可以偏离一个弱相互作用的两个组件系统的强烈。

英文摘要:

We study many-body contributions to the effective interaction between fermions in a three-component Fermi mixture. We find that effective interactions induced by the third component can lead to a phase diagram different from that predicted if interactions with the third component are neglected. As a result, in a confining potential a superfluid shell structure can arise even for equal populations of the components. We also find a critical temperature for the BCS transition in a 6Li mixture which can deviate strongly from the one in a weakly interacting two-component system.

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。

↑