Symmetry breaking in interacting ring-shaped superflows of Bose-Einstein condensates
arXiv:1909.08116 · doi:10.3390/sym11101312
Abstract
We demonstrate that the evolution of superflows in interacting persistent currents of ultracold gases is strongly affected by symmetry breaking of the quantum vortex dynamics. We study counter-propagating superflows in a system of two parallel rings in regimes of weak (a Josephson junction with tunneling through the barrier) and strong (rings merging across a reduced barrier) interactions. For the weakly interacting toroidal Bose-Einstein condensates, formation of rotational fluxons (Josephson vortices) is associated with spontaneous breaking of the rotational symmetry of the tunneling superflows. The influence of a controllable symmetry breaking on the final state of the merging counter-propagating superflows is investigated in the framework of a weakly dissipative mean-field model. It is demonstrated that the population imbalance between the merging flows and the breaking of the underlying rotational symmetry can drive the double-ring system to final states with different angular momenta.
arXiv comment11 pages, 5 figures
References in corpus (36)
- Driving phase slips in a superfluid atom circuit with a rotating weak link
- Finite Temperature Models of Bose-Einstein Condensation
- Phenomenological damping in trapped atomic Bose-Einstein condensates
- Persistent currents in spinor condensates
- Two-dimensional vortex quantum droplets
- Nonlinear dynamics for vortex lattice formation in a rotating Bose-Einstein condensate
- Quantum hydrodynamics
- Spontaneous Symmetry Breaking and Nambu-Goldstone Bosons in Quantum Many-Body Systems
- Resistive flow in a weakly interacting Bose-Einstein condensate
- Quantum Kelvin-Helmholtz instability in phase-separated two-component Bose-Einstein condensates
- Crossover between Kelvin-Helmholtz and counter-superflow instabilities in two-component Bose-Einstein condensates
- Decay of a quantum vortex: test of non-equilibrium theories for warm Bose-Einstein condensates
- Kibble-Zurek scaling and its breakdown for spontaneous generation of Josephson vortices in Bose-Einstein condensates
- Three-dimensional hybrid vortex solitons
- Rotational Fluxons of Bose-Einstein Condensates in Coplanar Double-Ring Traps
- Effective dynamics of cold atoms flowing in two ring shaped optical potentials with tunable tunneling
- Kelvin-Helmholtz instability in an atomic superfluid
- Spontaneous emergence of angular momentum Josephson oscillations in coupled annular Bose-Einstein condensates
- Structure of two-component Bose-Einstein condensates with respective vortex-antivortex superposition states
- Quantum dynamics of bosons in a two-ring ladder: dynamical algebra, vortex-like excitations and currents
- Stability of persistent currents in spinor Bose-Einstein condensates
- Vortex Structures Formed by the Interference of Sliced Condensates
- Coherent Quantum Phase Slip in two-component bosonic Atomtronic Circuits
- Counter-rotating vortices in miscible two-component Bose-Einstein condensates
- Sign of tunnel coupling in barrier-separated Bose-Einstein condensates and stability of double-ring systems
- Tunneling of persistent currents in coupled ring-shaped Bose-Einstein condensates
- Optical tweezers for vortex rings in Bose-Einstein condensates
- The Quantum Yang Baxter conditions: The fundamental relations behind the Nambu-Goldstone theorem
- Mesoscopic Vortex-Meissner currents in ring ladders
- Transport of ultracold atoms between concentric traps via spatial adiabatic passage
- Nonlinear dynamics of Josephson vortices in merging superfluid rings
- Vortex modes supported by spin-orbit coupling in a laser with saturable absorption
- Nonlinear standing waves in an array of coherently coupled Bose-Einstein condensates
- Emergence of spiral dark solitons in the merging of rotating Bose-Einstein condensates
- Spontaneous creation of non-zero angular momentum modes in tunnel-coupled two-dimensional degenerate Bose gases
- Analytical study on parameter regions of dynamical instability for two-component Bose--Einstein condensates with coaxial quantized vortices
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- Orbital angular momentum dynamics of Bose-Einstein condensates trapped in two stacked rings
- Generation of Josephson vortices in stacked toroidal Bose-Einstein condensates
- Quantum Vortices in Curved Geometries
- Engineering phase and density of Bose-Einstein condensates in curved waveguides with toroidal topology
- Static properties of two linearly coupled discrete circuits
- Parametric triggering of vortices in toroidally trapped rotating Bose-Einstein condensates
- Controlled acoustic-driven vortex transport in coupled superfluid rings