Induced interaction in a spin-polarized Fermi gas
Induced interaction in a spin-polarized Fermi gas
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自旋极化费米气体中的诱导相互作用
DOI：
10.1103/phys.rev.a82.013605
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发表时间：
2010-07
影响因子：
2.9
通讯作者：
Yin, Lan
中科院分区：
文献类型：
--
作者：
Yu, Zeng-Qiang;Yin, Lan
研究了诱导相互作用对自旋极化费米气体超流转变温度的影响。在BCS极限下，超流状态下的极化很小，诱导相互作用的影响与自旋平衡情况下几乎相同。三临界点的温度Tt和极化Pt值都比平均场结果降低了约2.22倍。这一降幅在BCS限制之外也是显著的。在么正极限下，通过与平均场和实验结果的比较，我们得到(Pt，Tt/Tf)=(0.42，0.16)。
We study the effect of the induced interaction on the superfluidtransition temperature of a spin-polarized Fermi gas. In the BCS limit, the polarization is very small in the superfluid state, and the effect of the induced interaction is almost the same as in the spin-balanced case. The temperature Tt and the polarization Pt of the tricritical point are both reduced from mean-field results by a factor about 2.22. This reduction is also significant beyond the BCS limit. In the unitary limit, we find (Pt,Tt/TF)=(0.42,0.16), in comparison with mean-field and experimental results.