Phase-separated vortex-lattice in a rotating binary Bose–Einstein condensate

Detalhes bibliográficos
Autor(a) principal: Adhikari, S. K. [UNESP]
Data de Publicação: 2019
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.cnsns.2018.11.019
http://hdl.handle.net/11449/188446
Resumo: We study circularly-symmetric phase separation of vortex lattices in a rapidly rotating harmonically-trapped quasi-two-dimensional binary Bose–Einstein condensate (BEC) by introducing a weak quartic trap in one of the components. The increase of the rotational frequency in such a system is also found to generate a phase separation of the vortex lattices of an overlapping non-rotating BEC. The phase-separated vortex lattices have different structures for a binary BEC with inter-species repulsion and inter-species attraction. In the former case of a fully repulsive binary BEC, the phase separation of the vortex-lattices is accompanied by a complete phase separation of component densities. In the latter case of inter-species attraction, there is a partial phase separation of component densities, although there could be a complete phase separation of the generated vortex lattices in the two components. In the case of inter-species attraction, we need to have different intra-species repulsion in the two components for an efficient phase separation. We compare and contrast our results with the phase separation obtained in a harmonically-trapped binary BEC without any quartic trap.
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spelling Phase-separated vortex-lattice in a rotating binary Bose–Einstein condensateGross–Pitaevskii equationRotating Bose–Einstein condensateSplit-step Crank–Nicolson schemeVortex latticeWe study circularly-symmetric phase separation of vortex lattices in a rapidly rotating harmonically-trapped quasi-two-dimensional binary Bose–Einstein condensate (BEC) by introducing a weak quartic trap in one of the components. The increase of the rotational frequency in such a system is also found to generate a phase separation of the vortex lattices of an overlapping non-rotating BEC. The phase-separated vortex lattices have different structures for a binary BEC with inter-species repulsion and inter-species attraction. In the former case of a fully repulsive binary BEC, the phase separation of the vortex-lattices is accompanied by a complete phase separation of component densities. In the latter case of inter-species attraction, there is a partial phase separation of component densities, although there could be a complete phase separation of the generated vortex lattices in the two components. In the case of inter-species attraction, we need to have different intra-species repulsion in the two components for an efficient phase separation. We compare and contrast our results with the phase separation obtained in a harmonically-trapped binary BEC without any quartic trap.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Instituto de Física Teórica UNESP - Universidade Estadual Paulista, 01.140-070 São PauloInstituto de Física Teórica UNESP - Universidade Estadual Paulista, 01.140-070 São PauloFAPESP: 2016/01343-7Universidade Estadual Paulista (Unesp)Adhikari, S. K. [UNESP]2019-10-06T16:08:20Z2019-10-06T16:08:20Z2019-06-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article212-219http://dx.doi.org/10.1016/j.cnsns.2018.11.019Communications in Nonlinear Science and Numerical Simulation, v. 71, p. 212-219.1007-5704http://hdl.handle.net/11449/18844610.1016/j.cnsns.2018.11.0192-s2.0-85057793064Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCommunications in Nonlinear Science and Numerical Simulationinfo:eu-repo/semantics/openAccess2021-10-22T21:16:04Zoai:repositorio.unesp.br:11449/188446Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T21:16:04Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Phase-separated vortex-lattice in a rotating binary Bose–Einstein condensate
title Phase-separated vortex-lattice in a rotating binary Bose–Einstein condensate
spellingShingle Phase-separated vortex-lattice in a rotating binary Bose–Einstein condensate
Adhikari, S. K. [UNESP]
Gross–Pitaevskii equation
Rotating Bose–Einstein condensate
Split-step Crank–Nicolson scheme
Vortex lattice
title_short Phase-separated vortex-lattice in a rotating binary Bose–Einstein condensate
title_full Phase-separated vortex-lattice in a rotating binary Bose–Einstein condensate
title_fullStr Phase-separated vortex-lattice in a rotating binary Bose–Einstein condensate
title_full_unstemmed Phase-separated vortex-lattice in a rotating binary Bose–Einstein condensate
title_sort Phase-separated vortex-lattice in a rotating binary Bose–Einstein condensate
author Adhikari, S. K. [UNESP]
author_facet Adhikari, S. K. [UNESP]
author_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Adhikari, S. K. [UNESP]
dc.subject.por.fl_str_mv Gross–Pitaevskii equation
Rotating Bose–Einstein condensate
Split-step Crank–Nicolson scheme
Vortex lattice
topic Gross–Pitaevskii equation
Rotating Bose–Einstein condensate
Split-step Crank–Nicolson scheme
Vortex lattice
description We study circularly-symmetric phase separation of vortex lattices in a rapidly rotating harmonically-trapped quasi-two-dimensional binary Bose–Einstein condensate (BEC) by introducing a weak quartic trap in one of the components. The increase of the rotational frequency in such a system is also found to generate a phase separation of the vortex lattices of an overlapping non-rotating BEC. The phase-separated vortex lattices have different structures for a binary BEC with inter-species repulsion and inter-species attraction. In the former case of a fully repulsive binary BEC, the phase separation of the vortex-lattices is accompanied by a complete phase separation of component densities. In the latter case of inter-species attraction, there is a partial phase separation of component densities, although there could be a complete phase separation of the generated vortex lattices in the two components. In the case of inter-species attraction, we need to have different intra-species repulsion in the two components for an efficient phase separation. We compare and contrast our results with the phase separation obtained in a harmonically-trapped binary BEC without any quartic trap.
publishDate 2019
dc.date.none.fl_str_mv 2019-10-06T16:08:20Z
2019-10-06T16:08:20Z
2019-06-15
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/10.1016/j.cnsns.2018.11.019
Communications in Nonlinear Science and Numerical Simulation, v. 71, p. 212-219.
1007-5704
http://hdl.handle.net/11449/188446
10.1016/j.cnsns.2018.11.019
2-s2.0-85057793064
url http://dx.doi.org/10.1016/j.cnsns.2018.11.019
http://hdl.handle.net/11449/188446
identifier_str_mv Communications in Nonlinear Science and Numerical Simulation, v. 71, p. 212-219.
1007-5704
10.1016/j.cnsns.2018.11.019
2-s2.0-85057793064
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Communications in Nonlinear Science and Numerical Simulation
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 212-219
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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