Topological Phases of One-Dimensional Fermions: An Entanglement Point of View

@article{Turner2011TopologicalPO,
  title={Topological Phases of One-Dimensional Fermions: An Entanglement Point of View},
  author={Ari M. Turner and F. Pollmann and Erez Berg},
  journal={Physical Review B},
  year={2011},
  volume={83},
  pages={075102}
}
The effect of interactions on topological insulators and superconductors remains, to a large extent, an open problem. Here, we describe a framework for classifying phases of one-dimensional interacting fermions, focusing on spinless fermions with time-reversal symmetry and particle number parity conservation, using concepts of entanglement. In agreement with an example presented by L. Fidkowski and A. Kitaev [Phys. Rev. B 81, 134509 (2010)], we find that in the presence of interactions there… 

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