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arXiv · 1610.09176

Quantum fluctuations in quasi-one-dimensional dipolar Bose-Einstein condensates

Daniel Edler·Chinmayee Mishra·Falk Wächtler·Rejish Nath·Subhasis Sinha·Luis Santos
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Abstract

Recent experiments have revealed that beyond-mean-field corrections are much more relevant in weakly-interacting dipolar condensates than in their non-dipolar counterparts. We show that in quasi-one-dimensional geometries quantum corrections in dipolar and non-dipolar condensates are strikingly different due to the peculiar momentum dependence of the dipolar interactions. The energy correction of the condensate presents not only a modified density dependence, but it may even change from attractive to repulsive at a critical density due to the surprising role played by the transversal directions. The anomalous quantum correction translates into a strongly modified physics for quantum-stabilized droplets and dipolar solitons. Moreover, and for similar reasons, quantum corrections of three-body correlations, and hence of three-body losses, are strongly modified by the dipolar interactions. This intriguing physics can be readily probed in current experiments with magnetic atoms.

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Daniel Edler, Chinmayee Mishra, Falk Wächtler, Rejish Nath, Subhasis Sinha, Luis Santos. 2016-10-28. Quantum fluctuations in quasi-one-dimensional dipolar Bose-Einstein condensates. https://doi.org/10.1103/physrevlett.119.050403

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