Core filling and snaking instability of dark solitons in spin-imbalanced superfluid Fermi gases

Matthew D. Reichl; Erich J. Mueller

doi:10.1103/physreva.95.053637

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arXiv · 1703.04808

Core filling and snaking instability of dark solitons in spin-imbalanced superfluid Fermi gases

Matthew D. Reichl·Erich J. Mueller

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Abstract

We use the time-dependent Bogoliubov de Gennes equations to study dark solitons in three-dimensional spin-imbalanced superfluid Fermi gases. We explore how the shape and dynamics of dark solitons are altered by the presence of excess unpaired spins which fill their low-density core. The unpaired particles broaden the solitons and suppress the transverse snake instability. We discuss ways of observing these phenomena in cold atom experiments.

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Matthew D. Reichl, Erich J. Mueller. 2017-06-02. Core filling and snaking instability of dark solitons in spin-imbalanced superfluid Fermi gases. https://doi.org/10.1103/physreva.95.053637

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