title: Adiabaticity criterion for moving vortices in dilute Bose-Einstein condensates.
abstract: Considering a moving vortex line in a dilute atomic Bose-Einstein condensate within time-dependent Hartree-Fock-Bogoliubov-Popov theory, we derive a criterion for the quasiparticle excitations to follow the vortex core rigidly. The assumption of adiabaticity, which is crucial for the validity of the stationary self-consistent theories in describing such time-dependent phenomena, is shown to imply a stringent criterion for the velocity of the vortex line. Furthermore, this condition is shown to be violated in the recent vortex precession experiments.
authors.affiliation: Materials Physics Laboratory, Helsinki University of Technology, P.O. Box 2200 (Technical Physics), FIN-02015 HUT, Finland.
authors.forename: S M
authors.initials: SM
authors.lastname: Virtanen
authors.forename: T P
authors.initials: TP
authors.lastname: Simula
authors.forename: M M
authors.initials: MM
authors.lastname: Salomaa