Scaling law for topologically ordered systems at finite temperature

@article{Iblisdir2009ScalingLF,
  title={Scaling law for topologically ordered systems at finite temperature},
  author={Sofyan Iblisdir and David P{\'e}rez-Garc{\'i}a and Miguel Aguado and Jiannis K. Pachos},
  journal={Physical Review B},
  year={2009},
  volume={79},
  pages={134303}
}
Understanding the behavior of topologically ordered lattice systems at finite temperature is a way of assessing their potential as fault-tolerant quantum memories. We compute the natural extension of the topological entanglement entropy for T>0, namely, the subleading correction I{sub topo} to the area law for mutual information. Its dependence on T can be written, for Abelian Kitaev models, in terms of information-theoretical functions and readily identifiable scaling behavior, from which the… 

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