Topological phases of lattice bosons with a dynamical gauge field

Optical lattices with a complex-valued tunneling term have become a standard way of studying gauge-field physics with cold atoms. If the complex phase of the tunneling is made density dependent, such a system features even a self-interacting or dynamical magnetic field. In this paper we study the sc...

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Autores: Raventós i Ribera, David, Graß, Tobias, Juliá-Díaz, Bruno, Santos, Luis, Lewenstein, Maciej
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Recursos:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/96403
Acesso em linha:https://hdl.handle.net/2445/96403
Access Level:acceso abierto
Palavra-chave:Optoelectrònica
Òptica quàntica
Optoelectronics
Quantum optics
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spelling Topological phases of lattice bosons with a dynamical gauge fieldRaventós i Ribera, DavidGraß, TobiasJuliá-Díaz, BrunoSantos, LuisLewenstein, MaciejOptoelectrònicaÒptica quànticaOptoelectronicsQuantum opticsOptical lattices with a complex-valued tunneling term have become a standard way of studying gauge-field physics with cold atoms. If the complex phase of the tunneling is made density dependent, such a system features even a self-interacting or dynamical magnetic field. In this paper we study the scenario of a few bosons in either a static or a dynamical gauge field by means of exact diagonalization. The topological structures are identified computing their Chern number. Upon decreasing the atom-atom contact interaction, the effect of the dynamical gauge field is enhanced, giving rise to a phase transition between two topologically nontrivial phases.American Physical Society2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/96403Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevA.93.033605Physical Review A, 2016, vol. 93, num. 3, p. 033605-1-033605-8http://dx.doi.org/10.1103/PhysRevA.93.033605info:eu-repo/grantAgreement/EC/FP7/600645info:eu-repo/grantAgreement/EC/FP7/323714info:eu-repo/grantAgreement/EC/FP7/339106info:eu-repo/grantAgreement/EC/H2020/641122(c) American Physical Society, 2016info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/964032026-05-27T06:46:51Z
dc.title.none.fl_str_mv Topological phases of lattice bosons with a dynamical gauge field
title Topological phases of lattice bosons with a dynamical gauge field
spellingShingle Topological phases of lattice bosons with a dynamical gauge field
Raventós i Ribera, David
Optoelectrònica
Òptica quàntica
Optoelectronics
Quantum optics
title_short Topological phases of lattice bosons with a dynamical gauge field
title_full Topological phases of lattice bosons with a dynamical gauge field
title_fullStr Topological phases of lattice bosons with a dynamical gauge field
title_full_unstemmed Topological phases of lattice bosons with a dynamical gauge field
title_sort Topological phases of lattice bosons with a dynamical gauge field
dc.creator.none.fl_str_mv Raventós i Ribera, David
Graß, Tobias
Juliá-Díaz, Bruno
Santos, Luis
Lewenstein, Maciej
author Raventós i Ribera, David
author_facet Raventós i Ribera, David
Graß, Tobias
Juliá-Díaz, Bruno
Santos, Luis
Lewenstein, Maciej
author_role author
author2 Graß, Tobias
Juliá-Díaz, Bruno
Santos, Luis
Lewenstein, Maciej
author2_role author
author
author
author
dc.subject.none.fl_str_mv Optoelectrònica
Òptica quàntica
Optoelectronics
Quantum optics
topic Optoelectrònica
Òptica quàntica
Optoelectronics
Quantum optics
description Optical lattices with a complex-valued tunneling term have become a standard way of studying gauge-field physics with cold atoms. If the complex phase of the tunneling is made density dependent, such a system features even a self-interacting or dynamical magnetic field. In this paper we study the scenario of a few bosons in either a static or a dynamical gauge field by means of exact diagonalization. The topological structures are identified computing their Chern number. Upon decreasing the atom-atom contact interaction, the effect of the dynamical gauge field is enhanced, giving rise to a phase transition between two topologically nontrivial phases.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/96403
url https://hdl.handle.net/2445/96403
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevA.93.033605
Physical Review A, 2016, vol. 93, num. 3, p. 033605-1-033605-8
http://dx.doi.org/10.1103/PhysRevA.93.033605
info:eu-repo/grantAgreement/EC/FP7/600645
info:eu-repo/grantAgreement/EC/FP7/323714
info:eu-repo/grantAgreement/EC/FP7/339106
info:eu-repo/grantAgreement/EC/H2020/641122
dc.rights.none.fl_str_mv (c) American Physical Society, 2016
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 2016
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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