Physics – Condensed Matter – Quantum Gases
Scientific paper
2011-10-14
Phys. Rev. A, 85, 033631 (2012)
Physics
Condensed Matter
Quantum Gases
5 pages, 4 figures, published version
Scientific paper
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 ${}^6$Li and ${}^{40}$K 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 ${}^6$Li and ${}^{40}$K atoms. Subsequently we study the relaxation of the motion of the spin polaron due to spin drag.
Armaitis J.
Baarsma J. E.
Duine Rembert A.
Stoof H. T. C.
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