Quantum phase transition of a two-dimensional quadrupolar system

Ensembles with long-range interactions between particles are promising for revealing strong quantum collective effects and many-body phenomena. Here we study the ground-state phase diagram of a two-dimensional Bose system with quadrupolar interactions using a diffusion Monte Carlo technique. We pred...

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Detalhes bibliográficos
Autores: Astrakharchik, Grigori|||0000-0003-0394-8094, Kurbakov, I. L., Lozovik, Yu. E.
Formato: artículo
Fecha de publicación:2021
País:España
Recursos:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/353452
Acesso em linha:https://hdl.handle.net/2117/353452
https://dx.doi.org/10.1103/PhysRevB.103.L140101
Access Level:acceso abierto
Palavra-chave:Phase transformations (Statistical physics)
Monte Carlo method
Bose-Einstein condensation
Phase transitions
Bose-Einstein condensates
Diffusion quantum Monte Carlo
Transicions de fase (Física estadística)
Montecarlo, Mètode de
Condensació de Bose-Einstein
Àrees temàtiques de la UPC::Física
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spelling Quantum phase transition of a two-dimensional quadrupolar systemAstrakharchik, Grigori|||0000-0003-0394-8094Kurbakov, I. L.Lozovik, Yu. E.Phase transformations (Statistical physics)Monte Carlo methodBose-Einstein condensationPhase transitionsBose-Einstein condensatesDiffusion quantum Monte CarloTransicions de fase (Física estadística)Montecarlo, Mètode deCondensació de Bose-EinsteinÀrees temàtiques de la UPC::FísicaEnsembles with long-range interactions between particles are promising for revealing strong quantum collective effects and many-body phenomena. Here we study the ground-state phase diagram of a two-dimensional Bose system with quadrupolar interactions using a diffusion Monte Carlo technique. We predict a quantum phase transition from a gas to a solid phase. The Lindemann ratio and the condensate fraction at the transition point are ¿=0.269(4) and n0/n=0.031(4), correspondingly. We observe the strong rotonization of the collective excitation branch in the vicinity of the phase transition point. Our results can be probed using state-of-the-art experimental systems of various nature, such as quasi-two-dimensional systems of quadrupolar excitons in transition metal dichalcogenide trilayers, quadrupolar molecules, and excitons or Rydberg atoms with quadrupole moments induced by strong magnetic fields.American Physical Society (APS)20212021-04-0120212021-10-08journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/353452https://dx.doi.org/10.1103/PhysRevB.103.L140101reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3534522026-05-27T15:37:01Z
dc.title.none.fl_str_mv Quantum phase transition of a two-dimensional quadrupolar system
title Quantum phase transition of a two-dimensional quadrupolar system
spellingShingle Quantum phase transition of a two-dimensional quadrupolar system
Astrakharchik, Grigori|||0000-0003-0394-8094
Phase transformations (Statistical physics)
Monte Carlo method
Bose-Einstein condensation
Phase transitions
Bose-Einstein condensates
Diffusion quantum Monte Carlo
Transicions de fase (Física estadística)
Montecarlo, Mètode de
Condensació de Bose-Einstein
Àrees temàtiques de la UPC::Física
title_short Quantum phase transition of a two-dimensional quadrupolar system
title_full Quantum phase transition of a two-dimensional quadrupolar system
title_fullStr Quantum phase transition of a two-dimensional quadrupolar system
title_full_unstemmed Quantum phase transition of a two-dimensional quadrupolar system
title_sort Quantum phase transition of a two-dimensional quadrupolar system
dc.creator.none.fl_str_mv Astrakharchik, Grigori|||0000-0003-0394-8094
Kurbakov, I. L.
Lozovik, Yu. E.
author Astrakharchik, Grigori|||0000-0003-0394-8094
author_facet Astrakharchik, Grigori|||0000-0003-0394-8094
Kurbakov, I. L.
Lozovik, Yu. E.
author_role author
author2 Kurbakov, I. L.
Lozovik, Yu. E.
author2_role author
author
dc.subject.none.fl_str_mv Phase transformations (Statistical physics)
Monte Carlo method
Bose-Einstein condensation
Phase transitions
Bose-Einstein condensates
Diffusion quantum Monte Carlo
Transicions de fase (Física estadística)
Montecarlo, Mètode de
Condensació de Bose-Einstein
Àrees temàtiques de la UPC::Física
topic Phase transformations (Statistical physics)
Monte Carlo method
Bose-Einstein condensation
Phase transitions
Bose-Einstein condensates
Diffusion quantum Monte Carlo
Transicions de fase (Física estadística)
Montecarlo, Mètode de
Condensació de Bose-Einstein
Àrees temàtiques de la UPC::Física
description Ensembles with long-range interactions between particles are promising for revealing strong quantum collective effects and many-body phenomena. Here we study the ground-state phase diagram of a two-dimensional Bose system with quadrupolar interactions using a diffusion Monte Carlo technique. We predict a quantum phase transition from a gas to a solid phase. The Lindemann ratio and the condensate fraction at the transition point are ¿=0.269(4) and n0/n=0.031(4), correspondingly. We observe the strong rotonization of the collective excitation branch in the vicinity of the phase transition point. Our results can be probed using state-of-the-art experimental systems of various nature, such as quasi-two-dimensional systems of quadrupolar excitons in transition metal dichalcogenide trilayers, quadrupolar molecules, and excitons or Rydberg atoms with quadrupole moments induced by strong magnetic fields.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-04-01
2021
2021-10-08
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/353452
https://dx.doi.org/10.1103/PhysRevB.103.L140101
url https://hdl.handle.net/2117/353452
https://dx.doi.org/10.1103/PhysRevB.103.L140101
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society (APS)
publisher.none.fl_str_mv American Physical Society (APS)
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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