Mean-field description of collapsing and exploding Bose-Einstein condensates

Detalhes bibliográficos
Autor(a) principal: Adhikari, Sadhan K. [UNESP]
Data de Publicação: 2002
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1103/PhysRevA.66.013611
http://hdl.handle.net/11449/228448
Resumo: We perform numerical simulations based on the time-dependent mean-field Gross-Pitaevskii equation to understand some aspects of a recent experiment by Donley et al. [Nature (London) 412, 295 (2001)] on the dynamics of collapsing and exploding Bose-Einstein condensates of [Formula Presented] atoms. These authors manipulated the atomic interaction by an external magnetic field via a Feshbach resonance, thus changing the repulsive condensate into an attractive one, and vice versa. In the actual experiment they suddenly changed the scattering length of atomic interaction from a positive to a large negative value on a preformed condensate in an axially symmetric trap. Consequently, the condensate collapsed and ejected atoms via explosion. We find that the present mean-field analysis can explain some aspects of the dynamics of the collapsing and exploding Bose-Einstein condensates. 5555 2002 The American Physical Society.
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spelling Mean-field description of collapsing and exploding Bose-Einstein condensatesWe perform numerical simulations based on the time-dependent mean-field Gross-Pitaevskii equation to understand some aspects of a recent experiment by Donley et al. [Nature (London) 412, 295 (2001)] on the dynamics of collapsing and exploding Bose-Einstein condensates of [Formula Presented] atoms. These authors manipulated the atomic interaction by an external magnetic field via a Feshbach resonance, thus changing the repulsive condensate into an attractive one, and vice versa. In the actual experiment they suddenly changed the scattering length of atomic interaction from a positive to a large negative value on a preformed condensate in an axially symmetric trap. Consequently, the condensate collapsed and ejected atoms via explosion. We find that the present mean-field analysis can explain some aspects of the dynamics of the collapsing and exploding Bose-Einstein condensates. 5555 2002 The American Physical Society.Instituto de Física Teórica Universidade Estadual Paulista, São Paulo, São Paulo, 405-900Instituto de Física Teórica Universidade Estadual Paulista, São Paulo, São Paulo, 405-900Universidade Estadual Paulista (UNESP)Adhikari, Sadhan K. [UNESP]2022-04-29T08:26:50Z2022-04-29T08:26:50Z2002-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article8http://dx.doi.org/10.1103/PhysRevA.66.013611Physical Review A - Atomic, Molecular, and Optical Physics, v. 66, n. 1, p. 8-, 2002.1094-16221050-2947http://hdl.handle.net/11449/22844810.1103/PhysRevA.66.0136112-s2.0-85037193503Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review A - Atomic, Molecular, and Optical Physicsinfo:eu-repo/semantics/openAccess2022-04-29T08:26:50Zoai:repositorio.unesp.br:11449/228448Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T08:26:50Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Mean-field description of collapsing and exploding Bose-Einstein condensates
title Mean-field description of collapsing and exploding Bose-Einstein condensates
spellingShingle Mean-field description of collapsing and exploding Bose-Einstein condensates
Adhikari, Sadhan K. [UNESP]
title_short Mean-field description of collapsing and exploding Bose-Einstein condensates
title_full Mean-field description of collapsing and exploding Bose-Einstein condensates
title_fullStr Mean-field description of collapsing and exploding Bose-Einstein condensates
title_full_unstemmed Mean-field description of collapsing and exploding Bose-Einstein condensates
title_sort Mean-field description of collapsing and exploding Bose-Einstein condensates
author Adhikari, Sadhan K. [UNESP]
author_facet Adhikari, Sadhan K. [UNESP]
author_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Adhikari, Sadhan K. [UNESP]
description We perform numerical simulations based on the time-dependent mean-field Gross-Pitaevskii equation to understand some aspects of a recent experiment by Donley et al. [Nature (London) 412, 295 (2001)] on the dynamics of collapsing and exploding Bose-Einstein condensates of [Formula Presented] atoms. These authors manipulated the atomic interaction by an external magnetic field via a Feshbach resonance, thus changing the repulsive condensate into an attractive one, and vice versa. In the actual experiment they suddenly changed the scattering length of atomic interaction from a positive to a large negative value on a preformed condensate in an axially symmetric trap. Consequently, the condensate collapsed and ejected atoms via explosion. We find that the present mean-field analysis can explain some aspects of the dynamics of the collapsing and exploding Bose-Einstein condensates. 5555 2002 The American Physical Society.
publishDate 2002
dc.date.none.fl_str_mv 2002-01-01
2022-04-29T08:26:50Z
2022-04-29T08:26:50Z
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.66.013611
Physical Review A - Atomic, Molecular, and Optical Physics, v. 66, n. 1, p. 8-, 2002.
1094-1622
1050-2947
http://hdl.handle.net/11449/228448
10.1103/PhysRevA.66.013611
2-s2.0-85037193503
url http://dx.doi.org/10.1103/PhysRevA.66.013611
http://hdl.handle.net/11449/228448
identifier_str_mv Physical Review A - Atomic, Molecular, and Optical Physics, v. 66, n. 1, p. 8-, 2002.
1094-1622
1050-2947
10.1103/PhysRevA.66.013611
2-s2.0-85037193503
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.format.none.fl_str_mv 8
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
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