1998/04/30 by Brian Jackson, B. Jackson, J F McCann +3 · 30 citations
Physics and Astronomy · #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Coupling (piping) #Eigenvalues and eigenvectors #Excitation #Flow (mathematics) #Harmonic #Materials science #Mechanics #Physics #Pulse (music) #Quantum electrodynamics #Quantum mechanics #Quantum, superfluid, helium dynamics #Strong Light-Matter Interactions #Voltage #cond-mat.stat-mech
paper · pdf · doi:10.1088/0953-4075/31/20/008
published in Journal of Physics B Atomic Molecular and Optical Physics 31(20), 4489-4499 (IOP Publishing) · 10 pages, 6 figures, REVTeX. Revised version, to appear in J. Phys. B
arxiv created 1998/08/23 · openalex publication_date 1998/10/28 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We solve the Gross-Pitaevskii equation to model the behaviour of a weakly-interacting Bose condensate. Solutions are presented for the eigenstates in one- and two-dimensional harmonic traps. We include the effect of gravity and coupling to a second condensate to simulate an output coupler for Bose condensed atoms, and find that the output pulse shape is in qualitative agreement with experiment. We also model flow under gravity through a constriction, demonstrating excitation and separation of eigenmodes in the condensate.