Confinement-induced resonance in quasi-one-dimensional systems under transversely anisotropic confinement

Details Confinement-induced resonance in quasi-one-dimensional systems under transversely anisotropic confinement Confinement-induced resonance in quasi-one-dimensional systems under transversely anisotropic confinement

2010-05-17

arxiv.org/abs/1005.2794v2

Phys. RevA. 82 063633 (2010)

Physics

Condensed Matter

Quantum Gases

6 pages, 5 figures, accepted for publication in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.82.063633

We theoretically investigate the confinement-induced resonance for quasi-one-dimensional quan- tum systems under transversely anisotropic confinement, using a two-body s-wave scattering model in the zero-energy collision limit. We predict a single resonance for any transverse anisotropy, whose position shows a slight downshift with increasing anisotropy. We compare our prediction with the recent experimental result by Haller et al. [Phys. Rev. Lett. 104, 153203 (2010)], in which two resonances are observed in the presence of transverse anisotropy. The discrepancy between theory and experiment remains to be resolved.

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