Phys. Rev. Lett. 93, 050402 (2004) [4 pages]Interacting Fermions in Highly Elongated Harmonic TrapsReceived 19 December 2003; published 29 July 2004 Quasi-one-dimensional 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. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.050402
DOI:
10.1103/PhysRevLett.93.050402
PACS:
03.75.Kk, 03.75.Hh, 05.30.Jp
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