Quantum Correlation in One-dimensional Extend Quantum Compass Model
Quantum Physics
2012-03-05 v2 Strongly Correlated Electrons
Abstract
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.
Cite
@article{arxiv.1110.0442,
title = {Quantum Correlation in One-dimensional Extend Quantum Compass Model},
author = {Wen-Long You},
journal= {arXiv preprint arXiv:1110.0442},
year = {2012}
}
Comments
8 pages, 14 figures, to appear in Eur. Phys. J. B