Title:
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Transverse Josephson vortices and localized states in stacked Bose-Einstein condensates
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Author:
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Gil Granados, Juan Antonio; Muñoz Mateo, Antonio; Guilleumas, Montserrat; Viñas Gausí, Xavier
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Other authors:
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Universitat de Barcelona |
Abstract:
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The stacks of Bose-Einstein condensates coupled by long Josephson junctions present a richphenomenology feasible to experimental realization and specially suitable for technologicalapplications as the nonlinear-optics and superconducting analogs have already proved. Among this,we show that transverse Bloch waves excited in arrays of one-dimensional coupled condensates cancarry tunneling superflows whose dynamical stability depends on the quasimomentum. Across thestacks with periodic boundary conditions, forming closed ring-shaped systems, such Bloch states yieldtransverse Josephson vortices with a generic non-integer circulation in units ofh/m. Additionally, thesuperpositions of degenerate linear Bloch waves can suppress the supercurrents and give rise tofamilies of nonlinear standing-wave states with strong(transverse)spatial localization. Stable states ofthis type can also be found infinite size systems. |
Subject(s):
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-Condensació de Bose-Einstein -Ones no lineals -Efecte túnel -Bose-Einstein condensation -Nonlinear waves -Tunneling (Physics) |
Rights:
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(c) IOP Publishing Ltd and Deutsche Physikalische Gesellschaft, 2019
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Document type:
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Article Article - Published version |
Published by:
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Institute of Physics Pub.
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