Robust stationary distributed discord in the Jordan-Wigner fermion system under perturbations of the initial state

  title={Robust stationary distributed discord in the Jordan-Wigner fermion system under perturbations of the initial state},
  author={Edward B. Fel'dman and A. I. Zenchuk},
  journal={Journal of Experimental and Theoretical Physics},
We investigate the Jordan-Wigner fermion clusters with a stationary distributed quantum pairwise discord. Such clusters appear after the Jordan-Wigner transformation of a spin chain governed by the nearest-neighbor XY Hamiltonian with the particular initial state having one polarized node. We show that the quantum discord stationarity in such systems is not destroyed by the “parasitic” polarization of at least two types. The first type appears because the initial state with a single polarized… 
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