Abstract
The quantum entanglement is studied in the neighborhood of a topological transition in some topological insulators models such as the two-dimensional Qi-Wu-Zhang model or Chern insulator. The system describes electrons hopping in two-dimensional chains. For one-dimensional model case, one have staggered hopping amplitudes. Our results show a strong effect of sudden variation of the topological charge Q in the neighborhood of phase transition on quantum entanglement for all cases analyzed.
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