Coreless vortex dipoles and bubbles in phase-separated binary condensates

Abstract

Vortex dipoles are generated when an obstacle moves through a superfluid. In case of phase-separated binary condensates, with appropriate interaction parameters in pan-cake shaped traps, we show that coreless vortex dipoles are created when a Gaussian obstacle beam traverses across them above a critical speed. As the obstacle passes through the inner component, it carries along a bubble of the outer component. Using Thomas-Fermi approximation, we show that phase-separated binary condensates can either support vortices with empty or filled cores. For time dependent obstacle potentials, ramped down in the present case, relative energy scales of the system influence the dynamical evolution of the binary condensate.

6 pages, 5 figures

References in corpus (10)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Double species condensate with tunable interspecies interactions
• 39-K Bose-Einstein condensate with tunable interactions
• Nanometer-scale spatial modulation of an inter-atomic interaction in a Bose-Einstein condensate
• Mean-field dynamics of a Bose-Einstein condensate in a time-dependent triple-well trap: Nonlinear eigenstates, Landau-Zener models and STIRAP
• Modulation instability and solitary wave formation in two-component Bose-Einstein condensates
• Interface Tension of Bose-Einstein Condensates
• Optimized production of a cesium Bose-Einstein condensate
• Dynamical pattern formation during growth of a dual-species Bose-Einstein condensate
• Symbiotic gap and semi-gap solitons in Bose-Einstein condensates

Cited by in corpus (17)

• Phase separation in a spin-orbit coupled Bose-Einstein condensate
• Goldstone modes and bifurcations in phase-separated binary condensates at finite temperature
• Spontaneous symmetry breaking in a spin-orbit coupled $f=2$ spinor condensate
• Fluctuation driven topological transition of binary condensates in optical lattices
• Dynamics of phase separation in two species Bose-Einstein condensates with vortices
• Phase separation of a two-component dipolar Bose-Einstein condensate in the quasi-one-dimensional and quasi-two-dimensional regime
• Segregated quantum phases of dipolar bosonic mixtures in two-dimensional optical lattices
• Fluctuation and interaction induced instability of dark solitons in single and binary condensates
• FACt: FORTRAN toolbox for calculating fluctuations in atomic condensates
• Binary mixtures of condensates in generic confining potentials
• Domain wall suppression in trapped mixtures of Bose-Einstein condensates
• Evolution of Goldstone mode in binary condensate mixtures
• A variational approach for the ground state profile of a trapped spinor-BEC: A detailed study of phase transition in spin-1 condensate at zero magnetic field
• Formation, dynamics and stability of coreless vortex dipoles in phase-separated binary condensates
• Spin domains in ground state of a trapped spin-1 condensate: A general study under Thomas-Fermi approximation
• Multi-component states for trapped spin-1 Bose-Einstein Condensates in the presence of magnetic field
• Miscibility-Immiscibility transition of strongly interacting bosonic mixtures in optical lattices