Strong-Coupling Theory for a Non-equilibrium Unitary Fermi Gas

被引：4
|
作者：
Kawamura, T. [1 ]
Kagamihara, D. [1 ]
Hanai, R. [2 ,3 ]
Ohashi, Y. [1 ]
机构：
[1] Keio Univ, Dept Phys, Kohoku Ku, 3-14-1 Hiyoshi, Yokohama, Kanagawa 2238522, Japan
[2] Univ Chicago, James Franck Inst, Dept Phys, 5640 S Ellis Ave, Chicago, IL 60637 USA
[3] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan
来源：
JOURNAL OF LOW TEMPERATURE PHYSICS | 2020年 / 201卷 / 1-2期
关键词：
Non-equilibrium strong-coupling state; Unitary Fermi gas; T-matrix approximation; Keldysh Green's function; CONDENSATION; TRANSITION;
D O I：
10.1007/s10909-019-02310-7
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We study a non-equilibrium unitary Fermi gas, being coupled with two baths with different values of chemical potential. Extending a T-matrix approximation developed in equilibrium Fermi gases to the non-equilibrium steady state by using the Keldysh Green's function technique, we examine the superfluid phase transition out of equilibrium. We also clarify non-equilibrium effects on the pseudogap phenomenon by strong pairing fluctuations.
引用
收藏
页码：41 / 48
页数：8
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