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Dzyaloshinskii-Moriya interaction and anisotropy effects on the entanglement of the Heisenberg model

Kargarian, M ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1103/PhysRevA.79.042319
  3. Publisher: 2009
  4. Abstract:
  5. In this paper the effect of Dzyaloshinskii-Moriya interaction and anisotropy on the entanglement of Heisenberg chain has been studied. While the anisotropy suppresses the entanglement due to favoring of the alignment of spins, the DM interaction restores the spoiled entanglement via creation of the quantum fluctuations. Thermodynamic limit of the model and emerging of nonanalytic behavior of the entanglement have also been probed. The singularities of the entanglement correspond to the critical boundary separating different phases of the model. The singularity of the entanglement derivative approaches the critical point from the gapped phase and will be symmetric if both phases on the boundary are gapped. © 2009 The American Physical Society
  6. Keywords:
  7. Anisotropy effect ; Critical boundaries ; Critical points ; DM interaction ; Dzyaloshinskii-Moriya interaction ; Heisenberg chains ; Heisenberg models ; Quantum fluctuation ; Thermodynamic limits ; Bioelectric phenomena ; Equations of state ; Quantum electronics ; Anisotropy
  8. Source: Physical Review A - Atomic, Molecular, and Optical Physics ; Volume 79, Issue 4 , 2009 ; 10502947 (ISSN)
  9. URL: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.79.042319