Polarons in extremely polarized Fermi gases: The strongly interacting 6Li-40K mixture

被引：20

作者：

Baarsma, J. E. ^{[1
]}

Armaitis, J. ^{[1
]}

Duine, R. A. ^{[1
]}

Stoof, H. T. C. ^{[1
]}

机构：

[1] Univ Utrecht, Inst Theoret Phys, NL-3584 CE Utrecht, Netherlands

来源：

PHYSICAL REVIEW A | 2012年 / 85卷 / 03期

基金：

欧洲研究理事会;

关键词：

Polarons - Fermions - Mixtures - Electron gas;

D O I：

10.1103/PhysRevA.85.033631

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the extremely polarized two-component Fermi gas with a mass imbalance in the strongly interacting regime. Specifically we focus on the experimentally available mixture of Li-6 and K-40 atoms. In this regime spin polarons, i.e., dressed minority atoms, form. We consider the spectral function for the minority atoms, from which the lifetime and the effective mass of the spin polaron can be determined. Moreover, we predict the radio-frequency (rf) spectrum and the momentum distribution for the spin polarons for experiments with Li-6 and K-40 atoms. Subsequently we study the relaxation of the motion of the Fermi polaron due to spin drag.

引用

页数：5

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