Thermal concurrence mixing in a one-dimensional Ising model

  title={Thermal concurrence mixing in a one-dimensional Ising model},
  author={Daniel Gunlycke and Sougato Bose and Viv Kendon and Vlatko Vedral},
  journal={Physical Review A},
We investigate the entanglement arising naturally in a one-dimensional Ising chain in a magnetic field in an arbitrary direction. We find that for different temperatures, different orientations of the magnetic field give maximum entanglement. In the high-temperature limit, this optimal orientation corresponds to the magnetic field being perpendicular to the Ising orientation $(z$ direction). In the low-temperature limit, we find that varying the angle of the magnetic field very slightly from… Expand
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