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Zoekopdracht: journal id: "physicalxreviewxletters"

AuteursJ. Levinsen, T.G. Tiecke, J.T.M. Walraven, D.S. Petrov
TitelAtom-dimer scattering and long-lived trimers in fermionic mixtures
TijdschriftPhysical Review Letters
Jaargang103
Jaar2009
Nummer15
Pagina's153202-
ISSN00319007
FaculteitFaculteit der Natuurwetenschappen, Wiskunde en Informatica
Instituut/afd.FNWI: Van der Waals-Zeeman Institute (WZI)
SamenvattingWe 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.
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