Quantum coherence and uncertainty in the anisotropic XY chain
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevB.90.104431 http://hdl.handle.net/11449/167667 |
Resumo: | We explore the local quantum coherence and the local quantum uncertainty, based on Wigner-Yanase skew information, in the ground state of the anisotropic spin-1/2 XY chain in a transverse magnetic field. We show that the skew information, as a figure of merit, supplies the necessary information to reveal the occurrence of the second-order phase transition and the completely factorized ground state in the XY model. Additionally, in the same context, we also discuss the usefulness of a simple experimentally friendly lower bound of local quantum coherence. Furthermore, we demonstrate how the connection between the appearance of nonanalyticities in the local quantum uncertainty of the ground state and the quantum phase transitions does not hold in general, by providing explicit examples of the situation. Lastly, we discuss the ability of the local quantum coherence to accurately estimate the critical point of the phase transition, and we investigate the robustness of the factorization phenomenon at low temperatures. |
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Quantum coherence and uncertainty in the anisotropic XY chainWe explore the local quantum coherence and the local quantum uncertainty, based on Wigner-Yanase skew information, in the ground state of the anisotropic spin-1/2 XY chain in a transverse magnetic field. We show that the skew information, as a figure of merit, supplies the necessary information to reveal the occurrence of the second-order phase transition and the completely factorized ground state in the XY model. Additionally, in the same context, we also discuss the usefulness of a simple experimentally friendly lower bound of local quantum coherence. Furthermore, we demonstrate how the connection between the appearance of nonanalyticities in the local quantum uncertainty of the ground state and the quantum phase transitions does not hold in general, by providing explicit examples of the situation. Lastly, we discuss the ability of the local quantum coherence to accurately estimate the critical point of the phase transition, and we investigate the robustness of the factorization phenomenon at low temperatures.Faculdade de Ciências, UNESP-Universidade Estadual PaulistaFaculty of Engineering and Natural Sciences, Sabanci UniversityFaculdade de Ciências, UNESP-Universidade Estadual PaulistaUniversidade Estadual Paulista (Unesp)Faculty of Engineering and Natural Sciences, Sabanci UniversityKarpat, G. [UNESP]Çakmak, B.Fanchini, F. F. [UNESP]2018-12-11T16:37:51Z2018-12-11T16:37:51Z2014-09-30info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1103/PhysRevB.90.104431Physical Review B - Condensed Matter and Materials Physics, v. 90, n. 10, 2014.1550-235X1098-0121http://hdl.handle.net/11449/16766710.1103/PhysRevB.90.1044312-s2.0-849074522512-s2.0-84907452251.pdf88848904721934740000-0003-3297-905XScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review B - Condensed Matter and Materials Physics1,604info:eu-repo/semantics/openAccess2023-12-24T06:19:51Zoai:repositorio.unesp.br:11449/167667Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:11:15.402898Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Quantum coherence and uncertainty in the anisotropic XY chain |
title |
Quantum coherence and uncertainty in the anisotropic XY chain |
spellingShingle |
Quantum coherence and uncertainty in the anisotropic XY chain Karpat, G. [UNESP] |
title_short |
Quantum coherence and uncertainty in the anisotropic XY chain |
title_full |
Quantum coherence and uncertainty in the anisotropic XY chain |
title_fullStr |
Quantum coherence and uncertainty in the anisotropic XY chain |
title_full_unstemmed |
Quantum coherence and uncertainty in the anisotropic XY chain |
title_sort |
Quantum coherence and uncertainty in the anisotropic XY chain |
author |
Karpat, G. [UNESP] |
author_facet |
Karpat, G. [UNESP] Çakmak, B. Fanchini, F. F. [UNESP] |
author_role |
author |
author2 |
Çakmak, B. Fanchini, F. F. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Faculty of Engineering and Natural Sciences, Sabanci University |
dc.contributor.author.fl_str_mv |
Karpat, G. [UNESP] Çakmak, B. Fanchini, F. F. [UNESP] |
description |
We explore the local quantum coherence and the local quantum uncertainty, based on Wigner-Yanase skew information, in the ground state of the anisotropic spin-1/2 XY chain in a transverse magnetic field. We show that the skew information, as a figure of merit, supplies the necessary information to reveal the occurrence of the second-order phase transition and the completely factorized ground state in the XY model. Additionally, in the same context, we also discuss the usefulness of a simple experimentally friendly lower bound of local quantum coherence. Furthermore, we demonstrate how the connection between the appearance of nonanalyticities in the local quantum uncertainty of the ground state and the quantum phase transitions does not hold in general, by providing explicit examples of the situation. Lastly, we discuss the ability of the local quantum coherence to accurately estimate the critical point of the phase transition, and we investigate the robustness of the factorization phenomenon at low temperatures. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-09-30 2018-12-11T16:37:51Z 2018-12-11T16:37:51Z |
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/10.1103/PhysRevB.90.104431 Physical Review B - Condensed Matter and Materials Physics, v. 90, n. 10, 2014. 1550-235X 1098-0121 http://hdl.handle.net/11449/167667 10.1103/PhysRevB.90.104431 2-s2.0-84907452251 2-s2.0-84907452251.pdf 8884890472193474 0000-0003-3297-905X |
url |
http://dx.doi.org/10.1103/PhysRevB.90.104431 http://hdl.handle.net/11449/167667 |
identifier_str_mv |
Physical Review B - Condensed Matter and Materials Physics, v. 90, n. 10, 2014. 1550-235X 1098-0121 10.1103/PhysRevB.90.104431 2-s2.0-84907452251 2-s2.0-84907452251.pdf 8884890472193474 0000-0003-3297-905X |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review B - Condensed Matter and Materials Physics 1,604 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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 |
|
_version_ |
1808129295537668096 |