Berezinskii-Kosterlitz-Thouless transitions in the six-state clock model

Details Berezinskii-Kosterlitz-Thouless transitions in the six-state clock model Berezinskii-Kosterlitz-Thouless transitions in the six-state clock model

2005-11-21

arxiv.org/abs/cond-mat/0511504v3

Physics

Condensed Matter

Statistical Mechanics

18pages, 7figures

Scientific paper

10.1088/0305-4470/39/12/006

Classical 2D clock model is known to have a critical phase with Berezinskii-Kosterlitz-Thouless(BKT) transitions. These transitions have logarithmic corrections which make numerical analysis difficult. In order to resolve this difficulty, one of the authors has proposed the method called level spectroscopy, which is based on the conformal field theory. We extend this method to the multi-degenerated case. As an example, we study the classical 2D 6-clock model which can be mapped to the quantum self-dual 1D 6-clock model. Additionally, we confirm that the self-dual point has a precise numerical agreement with the analytical result, and we argue the degeneracy of the excitation states at the self-dual point from the effective field theoretical point of view.

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