Vortex properties in the extended supersolid phase of dipolar Bose-Einstein condensates.

We study the properties of singly quantized linear vortices in the supersolid phase of a dipolar Bose-Einstein condensate at zero-temperature modeling 164Dy atoms. The system is extended in the x−y plane and confined by a harmonic trap in the polarization direction z. Our study is based on a general...

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Autores: Ancilotto, Francesco, Barranco Gómez, Manuel, Pi Pericay, Martí, Reatto, Luciano
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/183284
Acceso en línea:https://hdl.handle.net/2445/183284
Access Level:acceso abierto
Palabra clave:Condensació de Bose-Einstein
Vòrtexs
Superfluïdesa
Bose-Einstein condensation
Vortex-motion
Superfluidity
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spelling Vortex properties in the extended supersolid phase of dipolar Bose-Einstein condensates.Ancilotto, FrancescoBarranco Gómez, ManuelPi Pericay, MartíReatto, LucianoCondensació de Bose-EinsteinVòrtexsSuperfluïdesaBose-Einstein condensationVortex-motionSuperfluidityWe study the properties of singly quantized linear vortices in the supersolid phase of a dipolar Bose-Einstein condensate at zero-temperature modeling 164Dy atoms. The system is extended in the x−y plane and confined by a harmonic trap in the polarization direction z. Our study is based on a generalized Gross-Pitaevskii equation. We characterize the ground state of the system in terms of spatial order and superfluid fraction and compare the properties of a single vortex and of a vortex dipole in the superfluid phase (SFP) and in the supersolid phase (SSP). At variance with a vortex in the SFP, which is free to move in the superfluid, a vortex in the SSP is localized at the interstitial sites and does not move freely. We have computed the energy barrier for motion from an equilibrium site to another. The fact that the vortex is submitted to a periodic potential has a dramatic effect on the dynamics of a vortex dipole made of two counter-rotating parallel vortices; instead of rigidly translating as in the SFP, the vortex and antivortex approach each other by a series of jumps from one site to another until they annihilate in a very short time and their energy is transferred to bulk excitations.American Physical Society2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/183284Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1103/PhysRevA.103.033314Physical Review A, 2021, vol. 103, p. 033314-1-033314-12https://doi.org/10.1103/PhysRevA.103.033314(c) American Physical Society, 2021info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1832842026-05-27T06:46:51Z
dc.title.none.fl_str_mv Vortex properties in the extended supersolid phase of dipolar Bose-Einstein condensates.
title Vortex properties in the extended supersolid phase of dipolar Bose-Einstein condensates.
spellingShingle Vortex properties in the extended supersolid phase of dipolar Bose-Einstein condensates.
Ancilotto, Francesco
Condensació de Bose-Einstein
Vòrtexs
Superfluïdesa
Bose-Einstein condensation
Vortex-motion
Superfluidity
title_short Vortex properties in the extended supersolid phase of dipolar Bose-Einstein condensates.
title_full Vortex properties in the extended supersolid phase of dipolar Bose-Einstein condensates.
title_fullStr Vortex properties in the extended supersolid phase of dipolar Bose-Einstein condensates.
title_full_unstemmed Vortex properties in the extended supersolid phase of dipolar Bose-Einstein condensates.
title_sort Vortex properties in the extended supersolid phase of dipolar Bose-Einstein condensates.
dc.creator.none.fl_str_mv Ancilotto, Francesco
Barranco Gómez, Manuel
Pi Pericay, Martí
Reatto, Luciano
author Ancilotto, Francesco
author_facet Ancilotto, Francesco
Barranco Gómez, Manuel
Pi Pericay, Martí
Reatto, Luciano
author_role author
author2 Barranco Gómez, Manuel
Pi Pericay, Martí
Reatto, Luciano
author2_role author
author
author
dc.subject.none.fl_str_mv Condensació de Bose-Einstein
Vòrtexs
Superfluïdesa
Bose-Einstein condensation
Vortex-motion
Superfluidity
topic Condensació de Bose-Einstein
Vòrtexs
Superfluïdesa
Bose-Einstein condensation
Vortex-motion
Superfluidity
description We study the properties of singly quantized linear vortices in the supersolid phase of a dipolar Bose-Einstein condensate at zero-temperature modeling 164Dy atoms. The system is extended in the x−y plane and confined by a harmonic trap in the polarization direction z. Our study is based on a generalized Gross-Pitaevskii equation. We characterize the ground state of the system in terms of spatial order and superfluid fraction and compare the properties of a single vortex and of a vortex dipole in the superfluid phase (SFP) and in the supersolid phase (SSP). At variance with a vortex in the SFP, which is free to move in the superfluid, a vortex in the SSP is localized at the interstitial sites and does not move freely. We have computed the energy barrier for motion from an equilibrium site to another. The fact that the vortex is submitted to a periodic potential has a dramatic effect on the dynamics of a vortex dipole made of two counter-rotating parallel vortices; instead of rigidly translating as in the SFP, the vortex and antivortex approach each other by a series of jumps from one site to another until they annihilate in a very short time and their energy is transferred to bulk excitations.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/183284
url https://hdl.handle.net/2445/183284
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1103/PhysRevA.103.033314
Physical Review A, 2021, vol. 103, p. 033314-1-033314-12
https://doi.org/10.1103/PhysRevA.103.033314
dc.rights.none.fl_str_mv (c) American Physical Society, 2021
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 2021
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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