Spin-up of a superfluid vortex lattice driven by rough boundaries
arXiv:2004.14385 · doi:10.1103/PhysRevB.102.144520
Abstract
We study numerically the formation of a vortex lattice inside a rotating bucket containing superfluid helium, paying attention to an important feature which is practically unavoidable in all experiments: the microscopic roughness of the bucket's surface. We model this using the Gross-Pitaevskii for a weakly-interacting Bose gas, a model which is idealised when applied to superfluid helium but captures the key physics of the vortex dynamics which we are interested in. We find that the vortex lattice arises from the interaction and reconnections of nucleated U-shaped vortex lines, which merge and align along the axis of rotation. We quantify the effects which the surface roughness and remanent vortex lines play in this process.
arXiv comment11 pages, 12 figures
References in corpus (26)
- Vortex lattice formation in a rotating Bose-Einstein condensate
- Phenomenological damping in trapped atomic Bose-Einstein condensates
- XMDS2: Fast, scalable simulation of coupled stochastic partial differential equations
- Observation of Long-lived Vortex Aggregates in Rapidly Rotating Bose-Einstein Condensates
- Vortex states of rapidly rotating dilute Bose-Einstein condensates
- Giant hole and circular superflow in a fast rotating Bose-Einstein condensate
- Relaxation of superfluid turbulence in highly oblate Bose-Einstein condensates
- Vortex lattices in a stirred Bose-Einstein condensate
- A primer on quantum fluids
- Rapidly rotating Bose-Einstein condensates in anharmonic potentials
- Three-dimensional vortex configurations in a rotating Bose Einstein condensate
- Vortex filament method as a tool for computational visualization of quantum turbulence
- Generation and Decay of Two-Dimensional Quantum Turbulence in a Trapped Bose-Einstein Condensate
- Onsager vortex formation in Bose-Einstein condensates in two-dimensional power-law traps
- Quantum Analogs of Classical Wakes in Bose-Einstein Condensates
- Excimers He2* as Tracers of Quantum Turbulence in 4He in the T=0 Limit
- Solitons in two-dimensional Bose-Einstein condensates
- A superfluid boundary layer
- Motion of an object through a dilute quantum fluid
- A Vortex Filament Tracking Method for the Gross-Pitaevskii Model of a Superfluid
- Crossover from interaction to driven regimes in quantum vortex reconnections
- Vortex Nucleation Limited Mobility of Free Electron Bubbles in the Gross-Pitaevskii Model of a Superfluid
- Rotation and Angular Momentum Transfer in Bose-Einstein Condensates Induced by Spiral Dark Solitons
- Superfluid turbulence driven by cylindrically symmetric thermal counterflow
- Stability of giant vortices in quantum liquids
- Torquing the Condensate: Angular Momentum Transport in Bose-Einstein Condensates by Solitonic "Corkscrew"