Comment on "Six-state clock model on the square lattice: Fisher zero approach with Wang-Landau sampling".

@article{Baek2010CommentO,
  title={Comment on "Six-state clock model on the square lattice: Fisher zero approach with Wang-Landau sampling".},
  author={S. K. Baek and Petter Minnhagen and B. Kim},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  year={2010},
  volume={81 6 Pt 1},
  pages={
          063101
        }
}
  • S. K. Baek, Petter Minnhagen, B. Kim
  • Published 2010
  • Physics, Medicine
  • Physical review. E, Statistical, nonlinear, and soft matter physics
  • Hwang in [Phys. Rev. E 80, 042103 (2009)] suggested that the two transitions of the six-state clock model on the square lattice are not of the Kosterlitz-Thouless type. Here we show from simulations that at the upper transition, the helicity modulus does make a discontinuous jump to zero. This gives strong evidence for a Kosterlitz-Thouless transition. 
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