Quantum phase transition and entanglement in topological quantum wires
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cho, Jaeyoon | - |
dc.contributor.author | Kim, Kun Woo | - |
dc.date.accessioned | 2023-03-08T10:43:30Z | - |
dc.date.available | 2023-03-08T10:43:30Z | - |
dc.date.issued | 2017-06 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/62290 | - |
dc.description.abstract | We investigate the quantum phase transition of the Su-Schrieffer-Heeger (SSH) model by inspecting the two-site entanglements in the ground state. It is shown that the topological phase transition of the SSH model is signified by a nonanalyticity of local entanglement, which becomes discontinuous for finite even system sizes, and that this nonanalyticity has a topological origin. Such a peculiar singularity has a universal nature in one-dimensional topological phase transitions of noninteracting fermions. We make this clearer by pointing out that an analogous quantity in the Kitaev chain exhibiting the identical nonanalyticity is the local electron density. As a byproduct, we show that there exists a different type of phase transition, whereby the pattern of the two-site entanglements undergoes a sudden change. This transition is characterised solely by quantum information theory and does not accompany the closure of the spectral gap. We analyse the scaling behaviours of the entanglement in the vicinities of the transition points. © The Author(s) 2017. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | Nature Publishing Group | - |
dc.title | Quantum phase transition and entanglement in topological quantum wires | - |
dc.type | Article | - |
dc.identifier.doi | 10.1038/s41598-017-02717-w | - |
dc.identifier.bibliographicCitation | Scientific Reports, v.7, no.1 | - |
dc.description.isOpenAccess | Y | - |
dc.identifier.wosid | 000402689600001 | - |
dc.identifier.scopusid | 2-s2.0-85020464106 | - |
dc.citation.number | 1 | - |
dc.citation.title | Scientific Reports | - |
dc.citation.volume | 7 | - |
dc.type.docType | Article | - |
dc.publisher.location | 영국 | - |
dc.subject.keywordPlus | SEPARABILITY | - |
dc.subject.keywordPlus | STATES | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
84, Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea (06974)02-820-6194
COPYRIGHT 2019 Chung-Ang University All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.