Persistent currents in dipolar Bose-Einstein condensates confined in annular potentials

  title={Persistent currents in dipolar Bose-Einstein condensates confined in annular potentials},
  author={Francesc Malet and G M Kavoulakis and S. M. Reimann},
  journal={Physical Review A},
We consider a dipolar Bose-Einstein condensate confined in an annular potential, with all the dipoles being aligned along some arbitrary direction. In addition to the dipole-dipole interaction, we also assume a zero-range hard-core potential. We investigate the stability of the system against collapse, as well as the stability of persistent currents as a function of the orientation of the dipoles and of the strength of the hard-core interaction. 
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