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

Details Comment on `Six-state clock model on the square lattice: Fisher zero approach with Wang-Landau sampling' Comment on `Six-state clock model on the square lattice: Fisher zero approach with Wang-Landau sampling'

2010-05-26

arxiv.org/abs/1005.4836v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures

Scientific paper

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 thatat 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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