Dynamics of spin-polarized impurity in ultracold Fermi gas

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28.11.2021 15:34

Snapshots showing evolution of the ferron solution in the presence of the vortex. For more details see Phys. Rev. A 104, 033304 (2021).

P. Magierski, B. Tüzemen, G. Wlazłowski,
Dynamics of spin-polarized impurity in ultracold Fermi gas,
Phys. Rev. A 104, 033304 (2021) [arXiv2102.04833].

In the calculations, st-wslda-2d was used initial states generator and td-wslda-2d as time evolver.

In this study we show that the motion of spin-polarized impurity (ferron) in ultracold atomic gas is characterized by a certain critical velocity which can be traced back to the amount of spin imbalance inside the impurity.
We have calculated the effective mass of ferron in two dimensions. We show that the effective mass scales with the surface of the ferron. We discuss the impact of these findings; in particular, we demonstrate that ferrons become unstable in the vicinity of a vortex.

P. Magierski, B. Tüzemen, G. Wlazłowski,
Dynamics of spin-polarized impurity in ultracold Fermi gas,
Phys. Rev. A 104, 033304 (2021) [arXiv2102.04833].