Quantum filaments in dipolar Bose-Einstein condensates
Quantum Gases
2016-06-29 v1
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.
Cite
@article{arxiv.1601.04501,
title = {Quantum filaments in dipolar Bose-Einstein condensates},
author = {F. Wächtler and L. Santos},
journal= {arXiv preprint arXiv:1601.04501},
year = {2016}
}