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arXiv · 2105.00439

Many-body molecule formation at a domain wall in a one-dimensional strongly interacting ultracold Fermi gas

Andrzej Syrwid·Maciej Łebek·Piotr T. Grochowski·Kazimierz Rzążewski
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Abstract

We analyze how the presence of the bound state on top of strong intercomponent contact repulsion affects the dynamics of a two-component ultracold Fermi gas confined in a one-dimensional harmonic trap. By performing full many-body numerical calculations, we retrieve dynamics of an initially phase separated state that has been utilized to excite the spin-dipole mode in experimental settings. We observe an appearance of pairing correlations at the domain wall, heralding the onset of a molecular faction at the interlayer between the components. We find that such a mechanism can be responsible for the stabilization of the phase separation.

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Andrzej Syrwid, Maciej Łebek, Piotr T. Grochowski, Kazimierz Rzążewski. 2021-05-02. Many-body molecule formation at a domain wall in a one-dimensional strongly interacting ultracold Fermi gas. https://doi.org/10.1103/physreva.105.013314

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