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Bulletin of the American Physical Society

Effective three-body interactions of ultracold bosons in anharmonic traps

Philip R. Johnson, Eite Tiesinga

Published Jun 8, 2017• 0 citations
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The stability and collective excitation of Bose–Einstein condensates with both two- and three-body interactions in a two-dimensional anharmonic trap (i.e., harmonic plus quartic trap) are investigated. By using the variational method, the influence of the three-body interaction and the anharmonicity on the stability are discussed in detail. It is found that the anharmonicity of the trap and the three-body interaction have significant effect on the stability and collective excitations of the system.