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26 April 2024

» arxiv » 1506.1875

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Broad Feshbach resonances in collisions of ultracold Dysprosium atoms
Thomas Maier ; Igor Ferrier-Barbut ; Holger Kadau ; Matthias Schmitt ; Matthias Wenzel ; Clarissa Wink ; Tilman Pfau ; Krzysztof Jachymski ; Paul Sebastian Julienne ;
Date:	5 Jun 2015
Abstract:	We report on the observation of weakly-bound dimers of bosonic Dysprosium with a strong universal s-wave halo character. These states are responsible for broad magnetic Feshbach resonances. We analyze our findings using a coupled-channel theory taking into account the short range van der Waals interaction and a correction due to the strong dipole moment of Dysprosium. We are able to extract the scattering length as a function of magnetic field associated with these resonances. These results offer prospects of a tunability of the interactions in Dysprosium, which we illustrate by observing the saturation of three-body losses.
Source:	arXiv, 1506.1875
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