Confinement-induced Efimov resonances in Fermi-Fermi mixtures

Details Confinement-induced Efimov resonances in Fermi-Fermi mixtures Confinement-induced Efimov resonances in Fermi-Fermi mixtures

2009-03-21

arxiv.org/abs/0903.3633v2

Phys. Rev. A 79, 060701(R) (2009)

Physics

Condensed Matter

Other Condensed Matter

5 pages, 4 figures

Scientific paper

10.1103/PhysRevA.79.060701

A Fermi-Fermi mixture of 40K and 6Li does not exhibit the Efimov effect in a free space, but the Efimov effect can be induced by confining only 40K in one dimension. Here the Efimov's three-body parameter is controlled by the confinement length. We show that the three-body recombination rate in such a system in the dilute limit has a characteristic logarithmic-periodic dependence on the effective scattering length with the scaling factor 22.0 and can be expressed by formulas similar to those for identical bosons in three dimensions. The ultracold mixture of 40K and 6Li in the 1D-3D mixed dimensions is thus a promising candidate to observe the Efimov physics in fermions.

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