Critical exponents of the disorder-driven superfluid-insulator transition in one-dimensional Bose-Einstein condensates

Detalhes bibliográficos
Autor(a) principal: Cestari, Jardel Caminha Carvalho
Data de Publicação: 2011
Outros Autores: Foerster, Angela, Gusmao, Miguel Angelo Cavalheiro, Continentino, Mucio Amado
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/104342
Resumo: We investigate the nature of the superfluid-insulator quantum phase transition driven by disorder for noninteracting ultracold atoms on one-dimensional lattices. We consider two different cases: Anderson-type disorder, with local energies randomly distributed, and pseudodisorder due to a potential incommensurate with the lattice, which is usually called the Aubry-André model. A scaling analysis of numerical data for the superfluid fraction for different lattice sizes allows us to determine quantum critical exponents characterizing the disorder-driven superfluid-insulator transition. We also briefly discuss the effect of interactions close to the noninteracting quantum critical point of the Aubry-André model.
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spelling Cestari, Jardel Caminha CarvalhoFoerster, AngelaGusmao, Miguel Angelo CavalheiroContinentino, Mucio Amado2014-10-09T02:13:29Z20111050-2947http://hdl.handle.net/10183/104342000821032We investigate the nature of the superfluid-insulator quantum phase transition driven by disorder for noninteracting ultracold atoms on one-dimensional lattices. We consider two different cases: Anderson-type disorder, with local energies randomly distributed, and pseudodisorder due to a potential incommensurate with the lattice, which is usually called the Aubry-André model. A scaling analysis of numerical data for the superfluid fraction for different lattice sizes allows us to determine quantum critical exponents characterizing the disorder-driven superfluid-insulator transition. We also briefly discuss the effect of interactions close to the noninteracting quantum critical point of the Aubry-André model.application/pdfengPhysical review. A, Atomic, molecular, and optical physics. New York. Vol. 84, no. 5 (Nov. 2011), 055601, 4 p.Condensação Bose-EinsteinModelo de AndersonPontos criticosSuperfluidezCritical exponents of the disorder-driven superfluid-insulator transition in one-dimensional Bose-Einstein condensatesEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000821032.pdf000821032.pdfTexto completo (inglês)application/pdf1145227http://www.lume.ufrgs.br/bitstream/10183/104342/1/000821032.pdff37d4bf9d992663612c75d4fe98aa21aMD51TEXT000821032.pdf.txt000821032.pdf.txtExtracted Texttext/plain20110http://www.lume.ufrgs.br/bitstream/10183/104342/2/000821032.pdf.txte7e830d79f7812900942d382282ca748MD52THUMBNAIL000821032.pdf.jpg000821032.pdf.jpgGenerated Thumbnailimage/jpeg2170http://www.lume.ufrgs.br/bitstream/10183/104342/3/000821032.pdf.jpgb0955795c974562342ec03c2e4a49fb2MD5310183/1043422023-06-24 03:34:15.860325oai:www.lume.ufrgs.br:10183/104342Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-06-24T06:34:15Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Critical exponents of the disorder-driven superfluid-insulator transition in one-dimensional Bose-Einstein condensates
title Critical exponents of the disorder-driven superfluid-insulator transition in one-dimensional Bose-Einstein condensates
spellingShingle Critical exponents of the disorder-driven superfluid-insulator transition in one-dimensional Bose-Einstein condensates
Cestari, Jardel Caminha Carvalho
Condensação Bose-Einstein
Modelo de Anderson
Pontos criticos
Superfluidez
title_short Critical exponents of the disorder-driven superfluid-insulator transition in one-dimensional Bose-Einstein condensates
title_full Critical exponents of the disorder-driven superfluid-insulator transition in one-dimensional Bose-Einstein condensates
title_fullStr Critical exponents of the disorder-driven superfluid-insulator transition in one-dimensional Bose-Einstein condensates
title_full_unstemmed Critical exponents of the disorder-driven superfluid-insulator transition in one-dimensional Bose-Einstein condensates
title_sort Critical exponents of the disorder-driven superfluid-insulator transition in one-dimensional Bose-Einstein condensates
author Cestari, Jardel Caminha Carvalho
author_facet Cestari, Jardel Caminha Carvalho
Foerster, Angela
Gusmao, Miguel Angelo Cavalheiro
Continentino, Mucio Amado
author_role author
author2 Foerster, Angela
Gusmao, Miguel Angelo Cavalheiro
Continentino, Mucio Amado
author2_role author
author
author
dc.contributor.author.fl_str_mv Cestari, Jardel Caminha Carvalho
Foerster, Angela
Gusmao, Miguel Angelo Cavalheiro
Continentino, Mucio Amado
dc.subject.por.fl_str_mv Condensação Bose-Einstein
Modelo de Anderson
Pontos criticos
Superfluidez
topic Condensação Bose-Einstein
Modelo de Anderson
Pontos criticos
Superfluidez
description We investigate the nature of the superfluid-insulator quantum phase transition driven by disorder for noninteracting ultracold atoms on one-dimensional lattices. We consider two different cases: Anderson-type disorder, with local energies randomly distributed, and pseudodisorder due to a potential incommensurate with the lattice, which is usually called the Aubry-André model. A scaling analysis of numerical data for the superfluid fraction for different lattice sizes allows us to determine quantum critical exponents characterizing the disorder-driven superfluid-insulator transition. We also briefly discuss the effect of interactions close to the noninteracting quantum critical point of the Aubry-André model.
publishDate 2011
dc.date.issued.fl_str_mv 2011
dc.date.accessioned.fl_str_mv 2014-10-09T02:13:29Z
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/104342
dc.identifier.issn.pt_BR.fl_str_mv 1050-2947
dc.identifier.nrb.pt_BR.fl_str_mv 000821032
identifier_str_mv 1050-2947
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url http://hdl.handle.net/10183/104342
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Physical review. A, Atomic, molecular, and optical physics. New York. Vol. 84, no. 5 (Nov. 2011), 055601, 4 p.
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