title: Dynamics of dark solitons in elongated Bose-Einstein condensates.
abstract: We find two types of moving dark soliton textures in elongated condensates: nonstationary kinks and proper dark solitons. The latter have a flat notch region and we obtain the diagram of their dynamical stability. At finite temperatures the dynamically stable solitons decay due to the thermodynamic instability. We develop a theory of their dissipative dynamics and explain experimental data.
authors.affiliation: Russian Research Center Kurchatov Institute, Kurchatov Square, 123182 Moscow, Russia.
authors.forename: A
authors.initials: A
authors.lastname: Muryshev
authors.forename: G V
authors.initials: GV
authors.lastname: Shlyapnikov
authors.forename: W
authors.initials: W
authors.lastname: Ertmer
authors.forename: K
authors.initials: K
authors.lastname: Sengstock
authors.forename: M
authors.initials: M
authors.lastname: Lewenstein