Rapidity and momentum distributions of 1D dipolar quantum gases

Abstract

We explore the effect of tunable integrability breaking dipole-dipole interactions in the equilibrium states of highly magnetic 1D Bose gases of dysprosium at low temperatures. We experimentally observe that in the strongly correlated Tonks-Girardeau regime, rapidity and momentum distributions are nearly unaffected by the dipolar interactions. By contrast, we also observe that significant changes of these distributions occur when decreasing the strength of the contact interactions. We show that the main experimental observations are captured by modeling the system as an array of 1D gases with only contact interactions, dressed by the contribution of the short-range part of the dipolar interactions. Improvements to theory-experiment correspondence will require new tools tailored to near-integrable models possessing both short and long-range interactions.

5 pages, 4 figures plus supplement, as published

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• Experimental Investigation of a Bipartite Quench in a 1D Bose gas
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• Beyond-mean-field phases of rotating dipolar condensates
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• Phase diagram and elementary excitations of strongly interacting droplets with non-local interactions
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• Effects of intertube dipole-dipole interactions in nearly integrable one-dimensional ${}^{162}$Dy gases
• Exotic critical states as fractional Fermi seas in the one-dimensional Bose gas