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dc.contributor.author
Jezek, Dora Marta
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dc.contributor.author
Capuzzi, Pablo
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dc.date.available
2024-03-25T15:17:46Z
dc.date.issued
2023-08
dc.identifier.citation
Jezek, Dora Marta; Capuzzi, Pablo; Vortex nucleation processes in rotating lattices of Bose-Einstein condensates ruled by the on-site phases; American Physical Society; Physical Review A; 108; 2; 8-2023; 1-16
dc.identifier.issn
2469-9926
dc.identifier.uri
http://hdl.handle.net/11336/231495
dc.description.abstract
We study the nucleation and dynamics of vortices in rotating lattice potentials where weakly linked condensates are formed with each condensate exhibiting an almost axial symmetry. Due to such a symmetry, the on-site phases acquire a linear dependence on the coordinates as a result of the rotation, which allows us to predict the position of vortices along the low-density paths that separate the sites. We first show that, for a system of atoms loaded in a four-site square lattice potential, subject to a constant rotation frequency, the analytical expression that we obtain for the positions of vortices of the stationary arrays accurately reproduces the full three-dimensional Gross-Pitaevskii results. We then study the time-dependent vortex nucleation process when a linear ramp of the rotation frequency is applied to a lattice with 16 sites. We develop a formula for the number of nucleated vortices which turns out to have a linear dependence on the rotation frequency with a smaller slope than that of the standard estimate which is valid in the absence of the lattice. From time-dependent Gross-Pitaevskii simulations we further find that the on-site populations remain almost constant during the time evolution instead of spreading outwards, as expected from the action of the centrifugal force. Therefore, the time-dependent phase difference between neighboring sites acquires a running behavior typical of a self-trapping regime. We finally show that, in accordance with our predictions, this fast phase-difference evolution provokes a rapid vortex motion inside the lattice. Our analytical expressions may be useful for describing other vortex processes in systems with the same on-site axial symmetry.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
VORTEX
dc.subject
NUCLEATION
dc.subject
ROTATING LATTICE
dc.subject
BOSE-EINSTEIN CONDENSATE
dc.subject.classification
Física Atómica, Molecular y Química
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Vortex nucleation processes in rotating lattices of Bose-Einstein condensates ruled by the on-site phases
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-03-25T12:28:01Z
dc.identifier.eissn
2469-9934
dc.journal.volume
108
dc.journal.number
2
dc.journal.pagination
1-16
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Jezek, Dora Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
dc.description.fil
Fil: Capuzzi, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
dc.journal.title
Physical Review A
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevA.108.023310
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