Quantum Correlation in One-dimensional Extend Quantum Compass Model

Details Quantum Correlation in One-dimensional Extend Quantum Compass Model Quantum Correlation in One-dimensional Extend Quantum Compass Model

2011-10-03

arxiv.org/abs/1110.0442v2

Eur. Phys. J. B 85, 83 (2012)

Physics

Quantum Physics

8 pages, 14 figures, to appear in Eur. Phys. J. B

Scientific paper

10.1140/epjb/e2012-21046-y

We study the correlations in the one-dimensional extended quantum compass model in a transverse magnetic field. By exactly solving the Hamiltonian, we find that the quantum correlation of the ground state of one-dimensional quantum compass model is vanishing. We show that quantum discord can not only locate the quantum critical points, but also discern the orders of phase transitions. Furthermore, entanglement quantified by concurrence is also compared.

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