2004/05/28 by F. Kh. Abdullaev, Fatkhulla Kh. Abdullaev, Ravil M. Galimzyanov +4
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum optics and atomic interactions #Strong Light-Matter Interactions #cond-mat.other #cond-mat.soft
paper · pdf · doi:10.1088/0953-4075/37/17/009
17 pages, 10 figures, submitted to Journal of Physics B
arxiv created 2004/05/28 · openalex publication_date 2004/08/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Nonlinear oscillations of a 3D radial symmetric Bose-Einstein condensate under periodic variation in time of the atomic scattering length have been studied. The time-dependent variational approach is used for the analysis of the characteristics of nonlinear resonances in the oscillations of the condensate. The bistability in oscillations of the BEC width is investigated. The dependence of the BEC collapse threshold on the drive amplitude and parameters of the condensate and trap is found. Predictions of the theory are confirmed by numerical simulations of the full Gross-Pitaevskii equation.