Global entanglement in XXZ chains
- Autores
- Canosa, Norma Beatriz; Rossignoli, Raúl Dante
- Año de publicación
- 2006
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We examine the thermal entanglement of XXZ-type Heisenberg chains in the presence of a uniform magnetic field along the z axes through the evaluation of the negativity associated with bipartitions of the whole system and subsystems. Limit temperatures for nonzero global negativities are shown to depend on the asymmetry Δ, but not on the uniform field, and can be much higher than those limiting pairwise entanglement. It is also shown that global bipartite entanglement may exist for T > 0 even for Δ ≥ 1, i.e., when the system is fully aligned (and hence separable) at T = 0, and that the bipartition leading to the highest limit temperature depends on Δ.
Facultad de Ciencias Exactas - Materia
-
Ciencias Exactas
Física
thermal entanglement
Heisenberg chains
uniform magnetic field
limit temperatures
global bipartite entanglement
bipartition - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/126331
Ver los metadatos del registro completo
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Global entanglement in XXZ chainsCanosa, Norma BeatrizRossignoli, Raúl DanteCiencias ExactasFísicathermal entanglementHeisenberg chainsuniform magnetic fieldlimit temperaturesglobal bipartite entanglementbipartitionWe examine the thermal entanglement of XXZ-type Heisenberg chains in the presence of a uniform magnetic field along the z axes through the evaluation of the negativity associated with bipartitions of the whole system and subsystems. Limit temperatures for nonzero global negativities are shown to depend on the asymmetry Δ, but not on the uniform field, and can be much higher than those limiting pairwise entanglement. It is also shown that global bipartite entanglement may exist for T > 0 even for Δ ≥ 1, i.e., when the system is fully aligned (and hence separable) at T = 0, and that the bipartition leading to the highest limit temperature depends on Δ.Facultad de Ciencias Exactas2006-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/126331enginfo:eu-repo/semantics/altIdentifier/issn/1050-2947info:eu-repo/semantics/altIdentifier/issn/1094-1622info:eu-repo/semantics/altIdentifier/arxiv/1112.1279info:eu-repo/semantics/altIdentifier/doi/10.1103/physreva.73.022347info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:11:16Zoai:sedici.unlp.edu.ar:10915/126331Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:11:16.284SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Global entanglement in XXZ chains |
| title |
Global entanglement in XXZ chains |
| spellingShingle |
Global entanglement in XXZ chains Canosa, Norma Beatriz Ciencias Exactas Física thermal entanglement Heisenberg chains uniform magnetic field limit temperatures global bipartite entanglement bipartition |
| title_short |
Global entanglement in XXZ chains |
| title_full |
Global entanglement in XXZ chains |
| title_fullStr |
Global entanglement in XXZ chains |
| title_full_unstemmed |
Global entanglement in XXZ chains |
| title_sort |
Global entanglement in XXZ chains |
| dc.creator.none.fl_str_mv |
Canosa, Norma Beatriz Rossignoli, Raúl Dante |
| author |
Canosa, Norma Beatriz |
| author_facet |
Canosa, Norma Beatriz Rossignoli, Raúl Dante |
| author_role |
author |
| author2 |
Rossignoli, Raúl Dante |
| author2_role |
author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Física thermal entanglement Heisenberg chains uniform magnetic field limit temperatures global bipartite entanglement bipartition |
| topic |
Ciencias Exactas Física thermal entanglement Heisenberg chains uniform magnetic field limit temperatures global bipartite entanglement bipartition |
| dc.description.none.fl_txt_mv |
We examine the thermal entanglement of XXZ-type Heisenberg chains in the presence of a uniform magnetic field along the z axes through the evaluation of the negativity associated with bipartitions of the whole system and subsystems. Limit temperatures for nonzero global negativities are shown to depend on the asymmetry Δ, but not on the uniform field, and can be much higher than those limiting pairwise entanglement. It is also shown that global bipartite entanglement may exist for T > 0 even for Δ ≥ 1, i.e., when the system is fully aligned (and hence separable) at T = 0, and that the bipartition leading to the highest limit temperature depends on Δ. Facultad de Ciencias Exactas |
| description |
We examine the thermal entanglement of XXZ-type Heisenberg chains in the presence of a uniform magnetic field along the z axes through the evaluation of the negativity associated with bipartitions of the whole system and subsystems. Limit temperatures for nonzero global negativities are shown to depend on the asymmetry Δ, but not on the uniform field, and can be much higher than those limiting pairwise entanglement. It is also shown that global bipartite entanglement may exist for T > 0 even for Δ ≥ 1, i.e., when the system is fully aligned (and hence separable) at T = 0, and that the bipartition leading to the highest limit temperature depends on Δ. |
| publishDate |
2006 |
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2006-02 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/126331 |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/1050-2947 info:eu-repo/semantics/altIdentifier/issn/1094-1622 info:eu-repo/semantics/altIdentifier/arxiv/1112.1279 info:eu-repo/semantics/altIdentifier/doi/10.1103/physreva.73.022347 |
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