Dynamics of spin and density fluctuations in strongly interacting few-body systems

Detalhes bibliográficos
Autor(a) principal: Barfknecht, Rafael Emilio
Data de Publicação: 2019
Outros Autores: Foerster, Angela, Zinner, Nikolaj Thomas
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/204494
Resumo: The decoupling of spin and density dynamics is a remarkable feature of quantum one-dimensional many-body systems. In a few-body regime, however, little is known about this phenomenon. To address this problem, we study the time evolution of a small system of strongly interacting fermions after a sudden change in the trapping geometry. We show that, even at the few-body level, the excitation spectrum of this system presents separate signatures of spin and density dynamics. Moreover, we describe the effect of considering additional internal states with SU(N) symmetry, which ultimately leads to the vanishing of spin excitations in a completely balanced system
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spelling Barfknecht, Rafael EmilioFoerster, AngelaZinner, Nikolaj Thomas2020-01-17T04:10:46Z20192045-2322http://hdl.handle.net/10183/204494001107481The decoupling of spin and density dynamics is a remarkable feature of quantum one-dimensional many-body systems. In a few-body regime, however, little is known about this phenomenon. To address this problem, we study the time evolution of a small system of strongly interacting fermions after a sudden change in the trapping geometry. We show that, even at the few-body level, the excitation spectrum of this system presents separate signatures of spin and density dynamics. Moreover, we describe the effect of considering additional internal states with SU(N) symmetry, which ultimately leads to the vanishing of spin excitations in a completely balanced systemapplication/pdfengScientific reports. London. Vol. 9 (Nov. 2019), 15994, 11 p.FermionsSistemas hamiltonianosDynamics of spin and density fluctuations in strongly interacting few-body systemsEstrangeiroinfo: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:UFRGSTEXT001107481.pdf.txt001107481.pdf.txtExtracted Texttext/plain55513http://www.lume.ufrgs.br/bitstream/10183/204494/2/001107481.pdf.txt1943554742d435d0d7daebfdebefa6c6MD52ORIGINAL001107481.pdfTexto completo (inglês)application/pdf2136117http://www.lume.ufrgs.br/bitstream/10183/204494/1/001107481.pdface2db8fdff99dd45c55b971ad461792MD5110183/2044942023-06-24 03:38:50.84138oai:www.lume.ufrgs.br:10183/204494Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-06-24T06:38:50Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Dynamics of spin and density fluctuations in strongly interacting few-body systems
title Dynamics of spin and density fluctuations in strongly interacting few-body systems
spellingShingle Dynamics of spin and density fluctuations in strongly interacting few-body systems
Barfknecht, Rafael Emilio
Fermions
Sistemas hamiltonianos
title_short Dynamics of spin and density fluctuations in strongly interacting few-body systems
title_full Dynamics of spin and density fluctuations in strongly interacting few-body systems
title_fullStr Dynamics of spin and density fluctuations in strongly interacting few-body systems
title_full_unstemmed Dynamics of spin and density fluctuations in strongly interacting few-body systems
title_sort Dynamics of spin and density fluctuations in strongly interacting few-body systems
author Barfknecht, Rafael Emilio
author_facet Barfknecht, Rafael Emilio
Foerster, Angela
Zinner, Nikolaj Thomas
author_role author
author2 Foerster, Angela
Zinner, Nikolaj Thomas
author2_role author
author
dc.contributor.author.fl_str_mv Barfknecht, Rafael Emilio
Foerster, Angela
Zinner, Nikolaj Thomas
dc.subject.por.fl_str_mv Fermions
Sistemas hamiltonianos
topic Fermions
Sistemas hamiltonianos
description The decoupling of spin and density dynamics is a remarkable feature of quantum one-dimensional many-body systems. In a few-body regime, however, little is known about this phenomenon. To address this problem, we study the time evolution of a small system of strongly interacting fermions after a sudden change in the trapping geometry. We show that, even at the few-body level, the excitation spectrum of this system presents separate signatures of spin and density dynamics. Moreover, we describe the effect of considering additional internal states with SU(N) symmetry, which ultimately leads to the vanishing of spin excitations in a completely balanced system
publishDate 2019
dc.date.issued.fl_str_mv 2019
dc.date.accessioned.fl_str_mv 2020-01-17T04:10:46Z
dc.type.driver.fl_str_mv Estrangeiro
info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/204494
dc.identifier.issn.pt_BR.fl_str_mv 2045-2322
dc.identifier.nrb.pt_BR.fl_str_mv 001107481
identifier_str_mv 2045-2322
001107481
url http://hdl.handle.net/10183/204494
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Scientific reports. London. Vol. 9 (Nov. 2019), 15994, 11 p.
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eu_rights_str_mv openAccess
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institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
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