Enhancing the Detection of Natural Thermal Entanglement with Disorder

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dc.creatorHide, Jenny
dc.creatorSon, Wonmin
dc.creatorVedral, Vlatko
dc.date2008-07-16
dc.date2009-02-09
dc.date.accessioned2026-07-07T12:55:53Z
dc.date.available2026-07-07T12:55:53Z
dc.descriptionPhysical systems have some degree of disorder present in them. We discuss how to treat natural, thermal entanglement in any random macroscopic system from which a thermodynamic witness bounded by a constant can be found. We propose that functional many-body perturbation theory be applied to allow either a quenched or an annealed average over the disorder to be taken. We find when considering the example of an XX Heisenberg spin chain with a random coupling strength, that the region of natural entanglement detected by both witnesses can be enhanced by the disorder.
dc.description4 pages, 2 figures, accepted by Physical Review Letters
dc.identifierhttps://arxiv.org/abs/0807.2529
dc.identifierhttp://arxiv.org/abs/0807.2529
dc.identifierPhys. Rev. Lett. 102, 100503 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.100503
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224404
dc.subjectQuantum Physics
dc.subjectDisordered Systems and Neural Networks
dc.subjectStatistical Mechanics
dc.titleEnhancing the Detection of Natural Thermal Entanglement with Disorder
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