Bose-Einstein droplet in free space
Hiroki Saito, Masahito Ueda

TL;DR
This paper demonstrates that a Bose-Einstein condensate droplet can be stabilized in free space through rapid oscillations of interatomic interactions, with energy dissipation playing a key role in suppressing instabilities.
Contribution
It introduces a method to stabilize Bose-Einstein condensate droplets in free space using oscillating interactions and highlights the importance of energy dissipation in this process.
Findings
Bose-Einstein droplets can be stabilized in free space.
Rapid oscillations of interatomic interactions are effective.
Energy dissipation suppresses dynamical instabilities.
Abstract
We show that a droplet of a Bose-Einstein condensate can be dynamically stabilized in free space by rapid oscillations of interatomic interactions between attractive and repulsive through, e.g., the Feshbach resonance. Energy dissipation, which is present in realistic situations, is found to play a crucial role to suppress dynamical instabilities inherent in nonlinear nonequilibrium systems.
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