Resonances in ultracold dipolar atomic and molecular gases

A previously developed approach for the numerical treatment of two particles that are confined in a finite optical-lattice potential and interact via an arbitrary isotropic interaction potential has been extended to incorporate an additional anisotropic dipole-dipole interaction (DDI). The interplay...

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Bibliographic Details
Published inNew journal of physics Vol. 17; no. 6; pp. 65002 - 65017
Main Authors Schulz, Bruno, Sala, Simon, Saenz, Alejandro
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.06.2015
Subjects
Anharmonicity
Confinement
confinement-induced resonances
Coupling (molecular)
dipolar interactions
Dipole interactions
Molecular gases
Optical lattices
Physics
Resonance scattering
ultracold quantum gases
Wave scattering
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Summary:A previously developed approach for the numerical treatment of two particles that are confined in a finite optical-lattice potential and interact via an arbitrary isotropic interaction potential has been extended to incorporate an additional anisotropic dipole-dipole interaction (DDI). The interplay of a model but realistic short-range Born-Oppenheimer potential and the DDI for two confined particles is investigated. A variation of the strength of the DDI leads to diverse resonance phenomena. In a harmonic confinement potential some resonances show similarities to s-wave scattering resonances while in an anharmonic trapping potential like the one of an optical lattice additional inelastic confinement-induced dipolar resonances occur. The latter are due to a coupling of the relative and center-of-mass motion caused by the anharmonicity of the external confinement.
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/17/6/065002