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This article is cited in 15 scientific papers (total in 15 papers)
CONDENSED MATTER
Instabilities of a filled vortex in a two-component Bose–Einstein condensate
V. P. Ruban Landau Institute for Theoretical Physics, Russian Academy of Sciences,
Chernogolovka, Moscow region, 142432 Russia
Abstract:
A two-component Bose–Einstein condensate of cold atoms with a strong intercomponent repulsion leading to the spatial separation of the components has been numerically studied. Configurations with a multiple quantized vortex in one component, where the vortex core is filled with the other component, are considered. The effective radius of the core can exceed the width of the transition layer between components, and then an analogy with a filled cylindrical vortex in the classical hydrodynamics of two immiscible ideal fluids appears. This analogy allows one to analyze the longitudinal “sausage” instability and the transverse instability of the filled vortex in the condensate caused by the “tangential discontinuity” as well as the stable regime in the parametric gap between them. The presence of long-lived coherent structures formed in some cases at the nonlinear stages of both instabilities is numerically discovered.
Received: 16.03.2021 Revised: 18.03.2021 Accepted: 18.03.2021
Citation:
V. P. Ruban, “Instabilities of a filled vortex in a two-component Bose–Einstein condensate”, Pis'ma v Zh. Èksper. Teoret. Fiz., 113:8 (2021), 539–545; JETP Letters, 113:8 (2021), 532–537
Linking options:
https://www.mathnet.ru/eng/jetpl6410 https://www.mathnet.ru/eng/jetpl/v113/i8/p539
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Abstract page: | 82 | Full-text PDF : | 12 | References: | 31 | First page: | 5 |
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