Stable vortex dipoles in Nonrotating Bose-Einstein condensates
L. C. Crasovan, V. Vekslerchik, V. M. Pérez-García, J. P. Torres, D. Mihalache, Ll. Torner
Physical Review A, 68, 063609 (2003).
Pérez García, Victor M..
We find stable families of vortex dipoles in nonrotating Bose-Einstein condensates. The vortex dipoles correspond to topological excited collective states of the condensed atoms. They exist and are dynamically and structurally stable for a broad range of parameters. We show that they can be generated by phase-imprinting techniques on the ground state of condensates.