Related Experiment Video
Updated: Jun 8, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
Quantum and thermal effects of dark solitons in a one-dimensional Bose gas
1School of Mathematics, University of Southampton, Southampton SO17 1BJ, United Kingdom.
Abstract:
We numerically study the imprinting and dynamics of dark solitons in a bosonic atomic gas in a tightly confined one-dimensional harmonic trap both with and without an optical lattice. Quantum and thermal fluctuations are synthesized within the truncated Wigner approximation in the quasicondensate description. We track the soliton coordinates and calculate position and velocity uncertainties. We find that the phase fluctuations lower the classically predicted soliton speed and seed instabilities. Individual runs show interactions of solitons with sound waves, splitting, and disappearing solitons.
Related Concept Videos
The de Broglie Wavelength
First Law: Particles in One-dimensional Equilibrium
Solvating Effects
The Quantum-Mechanical Model of an Atom
Entropy and Solvation
Speed of Sound in Solids and Liquids

