2008/03/28 by M. Albert, Mathias Albert, T. Paul +3 · 46 citations
Physics and Astronomy · #Bose–Einstein condensate #Choked flow #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Dipole #Dissipative system #Flow (mathematics) #Mechanics #Nonlinear system #Physics #Quantum electrodynamics #Quantum mechanics #Quantum, superfluid, helium dynamics #Scattering #Strong Light-Matter Interactions #Superfluidity #Supersonic speed #cond-mat.other
paper · pdf · doi:10.1103/physrevlett.100.250405
published in Physical Review Letters 100(25), 250405 (American Physical Society) · 4 pages, 4 figures
arxiv created 2008/03/28 · openalex publication_date 2008/06/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider dipole oscillations of a trapped dilute Bose-Einstein condensate in the presence of a scattering potential consisting either in a localized defect or in an extended disordered potential. In both cases the breaking of superfluidity and the damping of the oscillations are shown to be related to the appearance of a nonlinear dissipative flow. At supersonic velocities the flow becomes asymptotically dissipationless.