Anisotropic and Long-Range Vortex Interactions in Two-Dimensional Dipolar Bose Gases Academic Article uri icon

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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 antidipole, changing the density profile and generating an effective dipolar potential centred at the vortex core whose most slowly decaying terms go as 1/ρ(2) and ln(ρ)/ρ(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 corotation dynamics and the suppression of vortex annihilation.

authors

  • O'dell, Duncan
  • Mulkerin, BC
  • van Bijnen, RMW
  • O’Dell, DHJ
  • Martin, AM
  • Parker, NG

publication date

  • October 25, 2013