Symmetry breaking in a localized interacting binary Bose-Einstein condensate in a bichromatic optical lattice
Autor(a) principal: | |
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Data de Publicação: | 2010 |
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Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevA.81.023620 http://hdl.handle.net/11449/225782 |
Resumo: | By direct numerical simulation of the time-dependent Gross-Pitaevskii equation using the split-step Fourier spectral method, we study different aspects of the localization of a cigar-shaped interacting binary (two-component) Bose-Einstein condensate (BEC) in a one-dimensional bichromatic quasiperiodic optical-lattice potential, as used in a recent experiment on the localization of a BEC. We consider two types of localized states: (i) when both localized components have a maximum of density at the origin x=0, and (ii) when the first component has a maximum of density and the second a minimum of density at x=0. In the noninteracting case, the density profiles are symmetric around x=0. We numerically study the breakdown of this symmetry due to interspecies and intraspecies interactions acting on the two components. Where possible, we have compared the numerical results with a time-dependent variational analysis. We also demonstrate the stability of the localized symmetry-broken BEC states under small perturbation. © 2010 The American Physical Society. |
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Repositório Institucional da UNESP |
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Symmetry breaking in a localized interacting binary Bose-Einstein condensate in a bichromatic optical latticeBy direct numerical simulation of the time-dependent Gross-Pitaevskii equation using the split-step Fourier spectral method, we study different aspects of the localization of a cigar-shaped interacting binary (two-component) Bose-Einstein condensate (BEC) in a one-dimensional bichromatic quasiperiodic optical-lattice potential, as used in a recent experiment on the localization of a BEC. We consider two types of localized states: (i) when both localized components have a maximum of density at the origin x=0, and (ii) when the first component has a maximum of density and the second a minimum of density at x=0. In the noninteracting case, the density profiles are symmetric around x=0. We numerically study the breakdown of this symmetry due to interspecies and intraspecies interactions acting on the two components. Where possible, we have compared the numerical results with a time-dependent variational analysis. We also demonstrate the stability of the localized symmetry-broken BEC states under small perturbation. © 2010 The American Physical Society.Instituto de Física Teórica UNESP-Universidade Estadual Paulista, 01.140-070 São PauloDepartment of Physics Hubei Normal University, Huangshi 435002Instituto de Física Teórica UNESP-Universidade Estadual Paulista, 01.140-070 São PauloUniversidade Estadual Paulista (UNESP)Hubei Normal UniversityCheng, Yongshan [UNESP]Adhikari, S. K. [UNESP]2022-04-28T20:59:56Z2022-04-28T20:59:56Z2010-02-24info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1103/PhysRevA.81.023620Physical Review A - Atomic, Molecular, and Optical Physics, v. 81, n. 2, 2010.1050-29471094-1622http://hdl.handle.net/11449/22578210.1103/PhysRevA.81.0236202-s2.0-77649141303Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review A - Atomic, Molecular, and Optical Physicsinfo:eu-repo/semantics/openAccess2022-04-28T20:59:56Zoai:repositorio.unesp.br:11449/225782Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T20:59:56Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Symmetry breaking in a localized interacting binary Bose-Einstein condensate in a bichromatic optical lattice |
title |
Symmetry breaking in a localized interacting binary Bose-Einstein condensate in a bichromatic optical lattice |
spellingShingle |
Symmetry breaking in a localized interacting binary Bose-Einstein condensate in a bichromatic optical lattice Cheng, Yongshan [UNESP] |
title_short |
Symmetry breaking in a localized interacting binary Bose-Einstein condensate in a bichromatic optical lattice |
title_full |
Symmetry breaking in a localized interacting binary Bose-Einstein condensate in a bichromatic optical lattice |
title_fullStr |
Symmetry breaking in a localized interacting binary Bose-Einstein condensate in a bichromatic optical lattice |
title_full_unstemmed |
Symmetry breaking in a localized interacting binary Bose-Einstein condensate in a bichromatic optical lattice |
title_sort |
Symmetry breaking in a localized interacting binary Bose-Einstein condensate in a bichromatic optical lattice |
author |
Cheng, Yongshan [UNESP] |
author_facet |
Cheng, Yongshan [UNESP] Adhikari, S. K. [UNESP] |
author_role |
author |
author2 |
Adhikari, S. K. [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Hubei Normal University |
dc.contributor.author.fl_str_mv |
Cheng, Yongshan [UNESP] Adhikari, S. K. [UNESP] |
description |
By direct numerical simulation of the time-dependent Gross-Pitaevskii equation using the split-step Fourier spectral method, we study different aspects of the localization of a cigar-shaped interacting binary (two-component) Bose-Einstein condensate (BEC) in a one-dimensional bichromatic quasiperiodic optical-lattice potential, as used in a recent experiment on the localization of a BEC. We consider two types of localized states: (i) when both localized components have a maximum of density at the origin x=0, and (ii) when the first component has a maximum of density and the second a minimum of density at x=0. In the noninteracting case, the density profiles are symmetric around x=0. We numerically study the breakdown of this symmetry due to interspecies and intraspecies interactions acting on the two components. Where possible, we have compared the numerical results with a time-dependent variational analysis. We also demonstrate the stability of the localized symmetry-broken BEC states under small perturbation. © 2010 The American Physical Society. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-02-24 2022-04-28T20:59:56Z 2022-04-28T20:59:56Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1103/PhysRevA.81.023620 Physical Review A - Atomic, Molecular, and Optical Physics, v. 81, n. 2, 2010. 1050-2947 1094-1622 http://hdl.handle.net/11449/225782 10.1103/PhysRevA.81.023620 2-s2.0-77649141303 |
url |
http://dx.doi.org/10.1103/PhysRevA.81.023620 http://hdl.handle.net/11449/225782 |
identifier_str_mv |
Physical Review A - Atomic, Molecular, and Optical Physics, v. 81, n. 2, 2010. 1050-2947 1094-1622 10.1103/PhysRevA.81.023620 2-s2.0-77649141303 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review A - Atomic, Molecular, and Optical Physics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803046343990575104 |