Dynamics of Entanglement for One-Dimensional Spin Systems in an External Time-Dependent Magnetic Field

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dc.creatorHuang, Zhen
dc.creatorKais, Sabre
dc.date2005-05-13
dc.date.accessioned2026-07-07T06:12:47Z
dc.date.available2026-07-07T06:12:47Z
dc.descriptionWe study the dynamics of entanglement for the XY-model, one-dimensional spin systems coupled through nearest neighbor exchange interaction and subject to an external time-dependent magnetic field. Using the two-site density matrix, we calculate the time-dependent entanglement of formation between nearest neighbor qubits. We investigate the effect of varying the temperature, the anisotropy parameter and the external time-dependent magnetic field on the entanglement. We have found that the entanglement can be localized between nearest neighbor qubits for certain values of the external time-dependent magnetic field. Moreover, as known for the magnetization of this model, the entanglement shows nonergodic behavior, it does not approach its equilibrium value at the infinite time limit.
dc.description26 pages, 11 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0505101
dc.identifierhttp://arxiv.org/abs/quant-ph/0505101
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/92891
dc.subjectQuantum Physics
dc.titleDynamics of Entanglement for One-Dimensional Spin Systems in an External Time-Dependent Magnetic Field
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