Energy and multipartite entanglement in multidimensional and frustrated spin models

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dc.creatorGühne, Otfried
dc.creatorToth, Geza
dc.date2005-10-24
dc.date2006-04-12
dc.date.accessioned2026-07-07T06:48:47Z
dc.date.available2026-07-07T06:48:47Z
dc.descriptionWe investigate the relation between the entanglement properties of a quantum state and its energy for macroscopic spin models. To this aim, we develop a general method to compute energy bounds for states without certain forms of multipartite entanglement. Violation of these bounds implies the presence of these types of multipartite entanglement. As examples, we investigate the Heisenberg model in different dimensions, the Ising model and the XX model in the presence of a magnetic field. Finally, by studying the Heisenberg model on a triangular lattice, we demonstrate that our techniques can be applied also to frustrated systems.
dc.description9 pages, 6 figures, v2: small changes
dc.identifierhttps://arxiv.org/abs/quant-ph/0510186
dc.identifierhttp://arxiv.org/abs/quant-ph/0510186
dc.identifierPhys. Rev. A 73, 052319 (2006)
dc.identifierdoi:10.1103/PhysRevA.73.052319
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/104147
dc.subjectQuantum Physics
dc.subjectStatistical Mechanics
dc.titleEnergy and multipartite entanglement in multidimensional and frustrated spin models
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