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journal id: "physicalxreviewxletters"
| Authors | J. Levinsen, T.G. Tiecke, J.T.M. Walraven, D.S. Petrov | | Title | Atom-dimer scattering and long-lived trimers in fermionic mixtures |
| Journal | Physical Review Letters |
| Volume | 103 |
| Year | 2009 |
| Issue | 15 |
| Pages | 153202- |
| ISSN | 00319007 |
| Faculty | Faculty of Science |
| Institute/dept. | FNWI: Van der Waals-Zeeman Institute (WZI) |
| Abstract | We consider a heteronuclear fermionic mixture on the molecular side of an interspecies Feshbach resonance and discuss atom-dimer scattering properties in uniform space and in the presence of an external confining potential, restricting the system to a quasi-two-dimensional geometry. We find that there is a peculiar atom-dimer p-wave resonance which can be tuned by changing the frequency of the confinement. Our results have implications for the ongoing experiments on lithium-potassium mixtures, where this mechanism allows for switching the p-wave interaction between a K atom and Li-K dimer from attractive to repulsive, and forming a weakly bound trimer with unit angular momentum. We show that such trimers are long lived and the atom-dimer resonance does not enhance inelastic relaxation in the mixture, making it an outstanding candidate for studies of p-wave resonance effects in a many-body system. |
| Document type | Article |
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