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Quantum entanglement in the one-dimensional Rice–Mele and two-dimensional Qi-Wu-Zhang model

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  • Lima, L.S.

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.

Suggested Citation

  • Lima, L.S., 2020. "Quantum entanglement in the one-dimensional Rice–Mele and two-dimensional Qi-Wu-Zhang model," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 545(C).
    • Handle: RePEc:eee:phsmap:v:545:y:2020:i:c:s0378437119321156
    DOI: 10.1016/j.physa.2019.123800
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    Keywords

    Topological insulator models; Entanglement;

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