Multipartite nonlocality in a thermalized Ising spin chain

@article{Campbell2010MultipartiteNI,
  title={Multipartite nonlocality in a thermalized Ising spin chain},
  author={Steve Campbell and Mauro Paternostro},
  journal={Physical Review A},
  year={2010},
  volume={82},
  pages={042324}
}
We study multipartite correlations and nonlocality in an isotropic Ising ring under transverse magnetic field at both zero and finite temperature. We highlight parity-induced differences between the multipartite Bell-like functions used in order to quantify the degree of nonlocality within a ring state and reveal a mechanism for the passive protection of multipartite quantum correlations against thermal spoiling effects that is clearly related to the macroscopic properties of the ring model. 

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