Global Quantum Correlation in the Ising model

Details Global Quantum Correlation in the Ising model Global Quantum Correlation in the Ising model

2012-01-16

arxiv.org/abs/1201.3252v1

IJQI Vol. 9, Issues 7&8 (2011) 1685-1699

Physics

Quantum Physics

Published in the International Journal of Quantum Information as part of the special issue devoted to "Quantum Correlations: e

Scientific paper

10.1142/S0219749911008404

We study quantum correlations in an isotropic Ising ring under the effects of a transverse magnetic field. After characterizing the behavior of two-spin quantum correlations, we extend our analysis to global properties of the ring, using a figure of merit for quantum correlations that shows enough sensitivity to reveal the drastic changes in the properties of the system at criticality. This opens up the possibility to relate statistical properties of quantum many-body systems to suitably tailored measures of quantum correlations that capture features going far beyond standard quantum entanglement.

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