Entanglement of finite cyclic chains at factorizing fields

We examine the entanglement of cyclic spin-1/2 chains with anisotropic XYZ Heisenberg couplings of arbitrary range at transverse factorizing magnetic fields. At these fields the system exhibits a degenerate symmetry-breaking separable ground state (GS). It is shown, however, that the side limits of...

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Detalles Bibliográficos
Autores principales: Rossignoli, Raúl Dante, Canosa, Norma Beatriz, Matera, Juan Mauricio
Formato: Articulo
Lenguaje:Inglés
Publicado: 2008
Materias:
Física
Entanglement measures
Entanglement and quantum nonlocality
Quantized spin models
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/154213
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-154213
record_format dspace
spelling I19-R120-10915-1542132023-06-12T20:07:07Z http://sedici.unlp.edu.ar/handle/10915/154213 issn:1050-2947 issn:1094-1622 Entanglement of finite cyclic chains at factorizing fields Rossignoli, Raúl Dante Canosa, Norma Beatriz Matera, Juan Mauricio 2008 2023-06-12T14:44:39Z en Física Entanglement measures Entanglement and quantum nonlocality Quantized spin models We examine the entanglement of cyclic spin-1/2 chains with anisotropic XYZ Heisenberg couplings of arbitrary range at transverse factorizing magnetic fields. At these fields the system exhibits a degenerate symmetry-breaking separable ground state (GS). It is shown, however, that the side limits of the GS pairwise entanglement at these fields are actually nonzero in finite chains, corresponding such fields to a GS spin-parity transition. These limits exhibit universal properties like being independent of the pair separation and interaction range, and are directly related to the magnetization jump. Illustrative exact results are shown for chains with (I) full range and (II) nearest-neighbor couplings. Global entanglement properties at such points are also discussed. Quantum Information Research Group Instituto de Física La Plata Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Entanglement measures
Entanglement and quantum nonlocality
Quantized spin models
spellingShingle Física
Entanglement measures
Entanglement and quantum nonlocality
Quantized spin models
Rossignoli, Raúl Dante
Canosa, Norma Beatriz
Matera, Juan Mauricio
Entanglement of finite cyclic chains at factorizing fields
topic_facet Física
Entanglement measures
Entanglement and quantum nonlocality
Quantized spin models
description We examine the entanglement of cyclic spin-1/2 chains with anisotropic XYZ Heisenberg couplings of arbitrary range at transverse factorizing magnetic fields. At these fields the system exhibits a degenerate symmetry-breaking separable ground state (GS). It is shown, however, that the side limits of the GS pairwise entanglement at these fields are actually nonzero in finite chains, corresponding such fields to a GS spin-parity transition. These limits exhibit universal properties like being independent of the pair separation and interaction range, and are directly related to the magnetization jump. Illustrative exact results are shown for chains with (I) full range and (II) nearest-neighbor couplings. Global entanglement properties at such points are also discussed.
format Articulo
Articulo
author Rossignoli, Raúl Dante
Canosa, Norma Beatriz
Matera, Juan Mauricio
author_facet Rossignoli, Raúl Dante
Canosa, Norma Beatriz
Matera, Juan Mauricio
author_sort Rossignoli, Raúl Dante
title Entanglement of finite cyclic chains at factorizing fields
title_short Entanglement of finite cyclic chains at factorizing fields
title_full Entanglement of finite cyclic chains at factorizing fields
title_fullStr Entanglement of finite cyclic chains at factorizing fields
title_full_unstemmed Entanglement of finite cyclic chains at factorizing fields
title_sort entanglement of finite cyclic chains at factorizing fields
publishDate 2008
url http://sedici.unlp.edu.ar/handle/10915/154213
work_keys_str_mv AT rossignolirauldante entanglementoffinitecyclicchainsatfactorizingfields
AT canosanormabeatriz entanglementoffinitecyclicchainsatfactorizingfields
AT materajuanmauricio entanglementoffinitecyclicchainsatfactorizingfields
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