Loss features in ultracold ${}^{162}$Dy gases: two- versus three-body processes

Abstract

Dipolar gases like erbium and dysprosium have a dense spectrum of resonant loss features associated with their strong anisotropic interaction potential. These resonances display various behaviours with density and temperature, implying diverse microscopic properties. Here, we quantitatively investigate the low-field ($B<6\text{G}$) loss features in ultracold thermal samples of ${}^{162}$Dy, revealing two- and three-body dominated loss processes. We investigate their temperature dependence and detect a feature compatible with a $d$-wave Fano-Feshbach resonance, which has not been observed before. We also analyse the expansion of the dipolar Bose-Einstein condensate as a function of the magnetic field and interpret the changes in size close to the resonances with a variation in the scattering length.

10 pages, 10 figures

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Cited by in corpus (5)

• Production and stabilization of a spin mixture of ultracold dipolar Bose gases
• Exploring atom-ion Feshbach resonances below the s-wave limit
• Two-Body Contact Dynamics in a Bose Gas near a Fano-Feshbach Resonance
• Macroscopic Particle Transport in Dissipative Long-Range Bosonic Systems
• Determination of the ground state polarizability of ${}^{162}$Dy near 530 nm