Stable vortex dipoles in nonrotating Bose-Einstein condensates
Lucian‐Cornel CrasovanICFO–Institut de Ciencies Fotoniques, and Department of Signal Theory and Communications, Universitat Politecnica de Catalunya, ES 08034 Barcelona, SpainV E VekslerchikDepartamento de Matemáticas, ETSI Industriales, Universidad de Castilla–La Mancha, 13071 Ciudad Real, SpainVíctor M. Pérez‐GarcíaDepartamento de Matemáticas, ETSI Industriales, Universidad de Castilla–La Mancha, 13071 Ciudad Real, SpainJuan P. TorresICFO–Institut de Ciencies Fotoniques, and Department of Signal Theory and Communications, Universitat Politecnica de Catalunya, ES 08034 Barcelona, SpainDumitru MihalacheDepartment of Theoretical Physics, Institute of Atomic Physics, P.O. Box MG-6, Bucharest, RomaniaLluís TornerICFO–Institut de Ciencies Fotoniques, and Department of Signal Theory and Communications, Universitat Politecnica de Catalunya, ES 08034 Barcelona, Spain
2003en
ABI
Аннотация
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.
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