Dynamics of a mobile ion in a Bose–Einstein condensate
Abstract
Abstract Characterization of the dynamics of an impurity immersed in a quantum medium is vital for fundamental understanding of matter as well as applications in modern day quantum technologies. The case of long-ranged interactions is of particular importance here, as it opens the possibility to leverage quantum correlations in controlling the system properties. Here, we consider a charged impurity moving in a bosonic gas and study its properties out of equilibrium. We extract the stationary momentum of the ion at long times, which is nonzero due to the superfluid nature of the medium, and the effective mass which stems from dressing the impurity with the host atoms. The nonlinear evolution leads not only to emission of density waves, but also momentum transfer back to the ion, resulting in the possibility of oscillatory dynamics.
Fields of Study & Subjects
Cold Atom Physics and Bose-Einstein Condensates
Quantum many-body systems
Advanced Physical and Chemical Molecular Interactions
Publication details
- Journal / source
- New Journal of Physics
- Publisher
- IOP Publishing
- Volume
- 28
- Issue
- 1
- Pages
- 013201–013201
- Publication date
- 1 January 2026
- Language
- EN