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arXiv · 1601.04501

Quantum filaments in dipolar Bose-Einstein condensates

F. Wächtler·L. Santos
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Abstract

Collapse in dipolar Bose-Einstein condensates may be arrested by quantum fluctuations. Due to the anisotropy of the dipole-dipole interactions, the dipole-driven collapse induced by soft excitations is compensated by the repulsive Lee-Huang-Yang contribution resulting from quantum fluctuations of hard excitations, in a similar mechanism as that recently proposed for Bose-Bose mixtures. The arrested collapse results in self-bound filament-like droplets, providing an explanation to recent dysprosium experiments. Arrested instability and droplet formation are novel general features directly linked to the nature of the dipole-dipole interactions, and should hence play an important role in all future experiments with strongly dipolar gases.

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F. Wächtler, L. Santos. 2016-01-18. Quantum filaments in dipolar Bose-Einstein condensates. https://doi.org/10.1103/physreva.93.061603

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