Quantum instability and edge entanglement in the quasi-long-range order
We investigate the buildup of quasi-long-range order in the XX chain with a transverse magnetic field at finite size. As the field is varied, the ground state of the system displays multiple level crossings producing a sequence of entanglement jumps. Using the partial fidelity and susceptibility, we...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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2009
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| _version_ | 1797081299256606720 |
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| author | Son, W Amico, L Plastina, F Vedral, V |
| author_facet | Son, W Amico, L Plastina, F Vedral, V |
| author_sort | Son, W |
| collection | OXFORD |
| description | We investigate the buildup of quasi-long-range order in the XX chain with a transverse magnetic field at finite size. As the field is varied, the ground state of the system displays multiple level crossings producing a sequence of entanglement jumps. Using the partial fidelity and susceptibility, we study the transition to the thermodynamic limit and argue that the topological order can be described in terms of kink-antikink pairs and marked by edge spin entanglement. © 2009 The American Physical Society. |
| first_indexed | 2024-03-07T01:12:40Z |
| format | Journal article |
| id | oxford-uuid:8d92d115-11e9-4941-86e7-9b42ef474aad |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:12:40Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:8d92d115-11e9-4941-86e7-9b42ef474aad2022-03-26T22:52:01ZQuantum instability and edge entanglement in the quasi-long-range orderJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:8d92d115-11e9-4941-86e7-9b42ef474aadEnglishSymplectic Elements at Oxford2009Son, WAmico, LPlastina, FVedral, VWe investigate the buildup of quasi-long-range order in the XX chain with a transverse magnetic field at finite size. As the field is varied, the ground state of the system displays multiple level crossings producing a sequence of entanglement jumps. Using the partial fidelity and susceptibility, we study the transition to the thermodynamic limit and argue that the topological order can be described in terms of kink-antikink pairs and marked by edge spin entanglement. © 2009 The American Physical Society. |
| spellingShingle | Son, W Amico, L Plastina, F Vedral, V Quantum instability and edge entanglement in the quasi-long-range order |
| title | Quantum instability and edge entanglement in the quasi-long-range order |
| title_full | Quantum instability and edge entanglement in the quasi-long-range order |
| title_fullStr | Quantum instability and edge entanglement in the quasi-long-range order |
| title_full_unstemmed | Quantum instability and edge entanglement in the quasi-long-range order |
| title_short | Quantum instability and edge entanglement in the quasi-long-range order |
| title_sort | quantum instability and edge entanglement in the quasi long range order |
| work_keys_str_mv | AT sonw quantuminstabilityandedgeentanglementinthequasilongrangeorder AT amicol quantuminstabilityandedgeentanglementinthequasilongrangeorder AT plastinaf quantuminstabilityandedgeentanglementinthequasilongrangeorder AT vedralv quantuminstabilityandedgeentanglementinthequasilongrangeorder |