Dynamical generation of two-dimensional matter-wave discrete solitons

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dc.creatorDudarev, Artem M.
dc.creatorDiener, Roberto B.
dc.creatorNiu, Qian
dc.date2003-12-02
dc.date2004-02-21
dc.date.accessioned2026-07-07T02:55:07Z
dc.date.available2026-07-07T02:55:07Z
dc.descriptionWe suggest a method to experimentally obtain two-dimensional matter-wave discrete solitons with a {\it self-repulsive} BEC in optical lattices. At the edge of the Brillouin zone, a wave packet effective mass is negative which could be treated as inversion of the nonlinearity sign. Above critical nonlinearity this makes the wave packets collapse partially into localized modes with a chemical potential located in the gap between the first and the second bands. This critical nonlinearity is also associated with the smallest nonlinearity for which the discrete solitons are possible in the gap. Extensive numerical simulations for square and asymmetric honeycomb lattices in continuous model illustrate every stage of the process.
dc.description16 subfigures, v2: added a section on delocalization and references
dc.identifierhttps://arxiv.org/abs/cond-mat/0312054
dc.identifierhttp://arxiv.org/abs/cond-mat/0312054
dc.identifierJ. Opt. B: Quantum Semiclass. Opt. 6 (May 2004) S231-S240
dc.identifierdoi:10.1088/1464-4266/6/5/010
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/22823
dc.subjectSoft Condensed Matter
dc.titleDynamical generation of two-dimensional matter-wave discrete solitons
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