Persistent currents in two-component condensates in a toroidal trap
arXiv:1310.0400 · doi:10.1103/PhysRevA.89.053602
Abstract
The stability of persistent currents in a two-component Bose-Einstein condensate in a toroidal trap is studied both in the miscible and immiscible regimes. In the miscible regime we show that superflow decay is related to linear instabilities of the spin-density Bogoliubov mode. We find a region of partial stability, where the flow is stable in the majority component while it decays in the minority component. We also characterize the dynamical instability appearing for a large relative velocity between the two components. In the immiscible regime the stability criterion is modified and depends on the specific density distribution of the two components. The effect of a coherent coupling between the two components is also discussed.
arXiv comment11 pages, 8 figures
References in corpus (30)
- Theory of Bose-Einstein condensation in trapped gases
- 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
- Generation of dark-bright soliton trains in superfluid-superfluid counterflow
- Vortex lattice formation in a rotating Bose-Einstein condensate
- Quantised supercurrent decay in an annular Bose-Einstein condensate
- Persistent currents in spinor condensates
- Dark-dark solitons and modulational instability in miscible, two-component Bose-Einstein condensates
- Dynamics of Bose condensed gases in highly deformed traps
- Sound propagation in a cylindrical Bose-condensed gas
- Binary Quantum Turbulence Arising from Countersuperflow Instability in Two-Component Bose-Einstein Condensates
- Vortex-Induced Phase Slip Dissipation in a Toroidal Bose-Einstein Condensate Flowing Through a Barrier
- Probing the circulation of ring-shaped Bose-Einstein condensates
- Supercurrent and dynamical instability of spin-orbit-coupled ultracold Bose gases
- Critical velocity in cylindrical Bose-Einstein condensates
- Dipolar condensates confined in a toroidal trap: ground state and vortices
- Mixtures of Bose Gases Confined in a Ring Potential
- Countersuperflow instability in miscible two-component Bose-Einstein condensates
- Sound Propagation in Elongated Bose-Einstein Condensed Clouds
- Symmetric-Asymmetric transition in mixtures of Bose-Einstein condensates
- Waves on an interface between two phase-separated Bose-Einstein condensates
- Vortices in Bose-Einstein condensates confined in a multiply connected Laguerre-Gaussian optical trap
- Persistent currents in a bosonic mixture in the ring geometry
- Nambu-Goldstone modes in segregated Bose-Einstein condensates
- Stability of persistent currents in spinor Bose-Einstein condensates
- Persistent currents in Bose gases confined in annular traps
- Current-spin-density functional study of persistent currents in quantum rings
- Connection between rotation and miscibility in a two-component Bose-Einstein condensate
- Mean-field yrast spectrum of a two-component Bose gas in ring geometry: persistent currents at higher angular momentum
- Stationary waves in a supersonic flow of a two-component Bose gas
Cited by in corpus (25)
- Atomtronic circuits: from many-body physics to quantum technologies
- Quantum simulation of non-trivial topology
- Spin-orbit-coupled Bose-Einstein condensates held under toroidal trap
- Odd-petal states and persistent flows in spin-orbit-coupled Bose-Einstein condensates
- Andreev-Bashkin effect in superfluid cold gases mixture
- Dual-species Bose-Einstein condensate of 41K and 87Rb in a hybrid trap
- Coupled superfluidity of binary Bose mixtures in two dimensions
- Perspective on new implementations of atomtronic circuits
- Domain walls and bubble-droplets in immiscible binary Bose gases
- Immiscible and miscible states in binary condensates in the ring geometry
- Superfluidity of pure spin current in ultracold Bose gases
- Superfluidity of Bose-Einstein condensates in ultracold atomic gases
- Excitation spectrum of a mixture of two Bose gases confined in a ring potential with interaction asymmetry
- Emergence of Classical Rotation in Superfluid Bose-Einstein Condensates
- Persistent currents in coherently coupled Bose-Einstein condensates in a ring trap
- Mean-field yrast spectrum and persistent currents in a two-component Bose gas with interaction asymmetry
- Spin-orbit-coupled spin-1 Bose-Einstein condensates in a toroidal trap: even-petal-number necklacelike state and persistent flow
- Acoustic analogue of Hawking radiation in quantized circular superflows of Bose-Einstein condensates
- Persistent Currents in Ferromagnetic Condensates
- Interfaces between Bose-Einstein and Tonks-Girardeau atomic gases
- Phase separation in a mixture of trapped charged Bose-Einstein condensates
- Mixture of two unequally charged superfluids in a magnetic field
- Controlled acoustic-driven vortex transport in coupled superfluid rings
- Counterflow and coflow instabilities in miscible binary superfluids
- Oscillating superflow in multicomponent Bose-Einstein condensates