• DOI:10.1209/0295-5075/109/40005
• Corpus ID: 118523958

Phase slips and vortex dynamics in Josephson oscillations between Bose-Einstein condensates

@article{Abad2014PhaseSA,
  title={Phase slips and vortex dynamics in Josephson oscillations between Bose-Einstein condensates},
  author={Marta Abad and M. Guilleumas and Ricardo Mayol and Francesco Piazza and Dora M. Jezek and Augusto Smerzi},
  journal={Europhysics Letters},
  year={2014},
  volume={109}
}

• M. Abad, M. Guilleumas, +3 authors A. Smerzi
• Published 19 September 2014
• Physics
• Europhysics Letters

We study the relation between Josephson dynamics and topological excitations in a dilute Bose-Einstein condensate confined in a double-well trap. We show that the phase slips responsible for the self-trapping regime are created by vortex rings entering and annihilating inside the weak-link region or created at the center of the barrier and expanding outside the system. Large amplitude oscillations just before the onset of self-trapping are also strictly connected with the dynamics of vortex rings at the edges of the inter-well barrier. Our results extend and analyze the dynamics of the vortex-induced phase slippages suggested a few decades ago in relation to the “ac” Josephson effect of superconducting and superfluid helium systems.