Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.physe.2009.06.073
Title: Entanglement in disordered and non-equilibrium systems
Authors: Hide, J.
Vedral, V. 
Keywords: Disorder
Entanglement
Non-equilibrium
Witness
Issue Date: Jan-2010
Citation: Hide, J., Vedral, V. (2010-01). Entanglement in disordered and non-equilibrium systems. Physica E: Low-Dimensional Systems and Nanostructures 42 (3) : 359-362. ScholarBank@NUS Repository. https://doi.org/10.1016/j.physe.2009.06.073
Abstract: We calculate an entanglement witness for a disordered spin system using the method of functional many-body perturbation theory, comparing the effect of taking a quenched and an annealed average over the disorder. We find, on considering the example of an XX Heisenberg spin chain with a Dzyaloshinskii-Moriya interaction, that disorder in the Dzyaloshinskii-Moriya interaction increases the region of entanglement detected by the witness. We also discuss a method of detecting entanglement in far from equilibrium systems. © 2009 Elsevier B.V. All rights reserved.
Source Title: Physica E: Low-Dimensional Systems and Nanostructures
URI: http://scholarbank.nus.edu.sg/handle/10635/96486
ISSN: 13869477
DOI: 10.1016/j.physe.2009.06.073
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