Anisotropic and long-range vortex interactions in two-dimensional dipolar Bose gases

Abstract

We perform a theoretical study into how dipole-dipole interactions modify the properties of superfluid vortices within the context of a two-dimensional atomic Bose gas of co-oriented dipoles. The reduced density at a vortex acts like a giant anti-dipole, changing the density profile and generating an effective dipolar potential centred at the vortex core whose most slowly decaying terms go as $1/{\rho }^2$ and $\ln (\rho )/{\rho }^3$. These effects modify the vortex-vortex interaction which, in particular, becomes anisotropic for dipoles polarized in the plane. Striking modifications to vortex-vortex dynamics are demonstrated, i.e. anisotropic co-rotation dynamics and the suppression of vortex annihilation.

PRL accepted, 6 pages, 5 figures

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Cited by in corpus (34)

• Introduction to quantum turbulence
• Observation of vortices and vortex stripes in a dipolar Bose-Einstein condensate
• Tuning the dipole-dipole interaction in a quantum gas with a rotating magnetic field
• Anisotropic Superfluid Behavior of a Dipolar Bose-Einstein Condensate
• Vortex properties in the extended supersolid phase of dipolar Bose-Einstein condensates
• Vortices and vortex lattices in quantum ferrofluids
• Controllable non-local interactions between dark solitons in dipolar condensates
• Half-Quantum Vortex Molecules in a Binary Dipolar Bose Gas
• Vortex Lattice Formation in Dipolar Bose-Einstein Condensates via Rotation of the Polarization
• Exploring the Stability and Dynamics of Dipolar Matter-Wave Dark Solitons
• A general theory of flattened dipolar condensates
• Vortices in dipolar Bose-Einstein condensates
• Rotational tuning of the dipole-dipole interaction in a Bose gas of magnetic atoms
• Dipolar condensates with tilted dipoles in a pancake-shaped confinement
• Internal structure and stability of vortices in a dipolar spinor Bose-Einstein condensate
• Higher-order effective interactions for bosons near a two-body zero crossing
• Arbitrary-angle rotation of the polarization of a dipolar Bose-Einstein condensate
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• Effect of an oscillating Gaussian obstacle in a Dipolar Bose-Einstein condensate
• Dynamics of the corotating vortices in dipolar Bose-Einstein condensates in the presence of dissipation
• Vortices in the two-dimensional dipolar Bose gas
• Spin rotons and supersolids in binary antidipolar condensates
• Stabilization of trapless dipolar Bose-Einstein condensates by temporal modulation of the contact interaction
• Anisotropic superfluidity of two-dimensional excitons in a periodic potential
• Exploring the Berezinskii-Kosterlitz-Thouless Transition in a Two-dimensional Dipolar Bose Gas
• Induced supersolidity in a Dy-Er mixture
• Vortex pair dynamics in three-dimensional homogeneous dipolar superfluids
• Vortex to Rotons Transition in Dipolar Bose-Einstein Condensates
• Roadmap to vortex nucleation below critical rotation frequency in a dipolar Bose-Einstein condensate
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• Excitations and anisotropic sound in planar dipolar supersolids with tilted dipoles
• A quantum storm in a teacup
• Velocity correlations of vortices and rarefaction pulses in compressible planar quantum fluids
• Crow instability of vortex lines in dipolar superfluids