Oscillating superflow in multicomponent Bose-Einstein condensates
arXiv:1712.07363
Abstract
Conservation of angular momentum depends on the existence of rotational symmetry. However, even in systems where this symmetry is broken, flipping between angular momentum eigenstates often requires an activation energy. Here we discuss an example of superfluid flow in an azimuthally asymmetric toroidal potential, which shows sustained oscillations between two different rotation directions. The energy required to change the direction of rotation is taken out of and temporarily restored into the rotational and intra-component interaction energies of the system.
12 pages, 5 figures, Submission to SciPost
References in corpus (20)
- Vortex formation in a stirred Bose-Einstein condensate
- Vortices in a Bose-Einstein Condensate
- Phase separation of Bose-Einstein condensates
- Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap
- Superflow in a toroidal Bose-Einstein condensate: an atom circuit with a tunable weak link
- Driving phase slips in a superfluid atom circuit with a rotating weak link
- Binary Bose-Einstein Condensate Mixtures in Weakly and Strongly Segregated Phases
- Quantised supercurrent decay in an annular Bose-Einstein condensate
- Quench-induced supercurrents in an annular Bose gas
- Persistent currents in spinor condensates
- Observation of Tkachenko Oscillations in Rapidly Rotating Bose-Einstein Condensates
- Towards the observation of Hawking radiation in Bose--Einstein condensates
- Split-step Fourier methods for the Gross-Pitaevskii equation
- Hawking Radiation in Laboratories
- The Quantum de Laval Nozzle: stability and quantum dynamics of sonic horizons in a toroidally trapped Bose gas containing a superflow
- Structural instability of vortices in Bose-Einstein condensates
- Persistent currents in two-component condensates in a toroidal trap
- Reversal of the circulation of a vortex by quantum tunneling in trapped Bose systems
- Connection between rotation and miscibility in a two-component Bose-Einstein condensate
- Persistent currents in coherently coupled Bose-Einstein condensates in a ring trap