Pairing instabilities in quasi-two-dimensional Fermi gases

Abstract

We study non-equilibrium dynamics of ultracold two-component Fermi gases in low-dimensional geometries after the interactions are quenched from weakly interacting to strongly interacting regime. We develop a T-matrix formalism that takes into account the interplay between Pauli blocking and tight confinement in low-dimensional geometries. We employ our formalism to study the formation of molecules in quasi-two-dimensional Fermi gases near Feshbach resonance and show that the rate at which molecules form depends strongly on the transverse confinement. Furthermore, Pauli blocking gives rise to a sizable correction to the binding energy of molecules.

6 pages, 3 figures

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Cited by in corpus (17)

• Attractive and repulsive Fermi polarons in two dimensions
• Correlations and Pair Formation in a Repulsively Interacting Fermi Gas
• Observation of quantum-limited spin transport in strongly interacting two-dimensional Fermi gases
• Pairing effects in the non-degenerate limit of the two-dimensional Fermi gas
• Anomalous conductances in an ultracold quantum wire
• Diagrammatic Monte Carlo study of quasi-two-dimensional Fermi-polarons
• Three-body problem in a two-dimensional Fermi gas
• Radio frequency spectra of Feshbach molecules in quasi-two dimensional geometries
• High-polarization limit of the quasi-two-dimensional Fermi gas
• Pairing and radio-frequency spectroscopy in two-dimensional Fermi gases
• Quantum-Zeno Fermi polaron in the strong dissipation limit
• Two-dimensional Bose gases near resonance: universal three-body effects
• Interaction energy and itinerant ferromagnetism in a strongly interacting Fermi gas in the absence of molecule formation
• Attractive polaron in a Dirac system within the ladder approximation
• Significance of dressed molecules in a quasi-two-dimensional polarized Fermi gas
• Attractive polaron formed in doped nonchiral/chiral parabolic system within ladder approximation
• Confinement induced interlayer molecules: a route to strong interatomic interactions