Interacting fermions in quasi-one-dimensional harmonic traps

Details Interacting fermions in quasi-one-dimensional harmonic traps Interacting fermions in quasi-one-dimensional harmonic traps

2003-12-19

arxiv.org/abs/cond-mat/0312538v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.93.050402

Quasi-one-dimensional (quasi-1d) two-component Fermi gases with effectively attractive and repulsive interactions are characterized for arbitrary interaction strength. The ground-state properties of the gas confined in highly elongated harmonic traps are determined within the local density approximation. For strong attractive effective interactions the existence of a molecular Tonks-Girardeau gas is predicted. The frequency of the lowest breathing mode is calculated as a function of the coupling strength for both attractive and repulsive interactions.

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