## Abstract

The hard-disk system is studied by observing the nonequilibrium relaxation behavior of a bond-orientational order parameter. The density dependence of characteristic relaxation time [Formula presented] is estimated from the finite-time scaling analysis. The critical point between the fluid and the hexatic phase is refined to be [Formula presented] by assuming the divergence behavior of the Kosterlitz-Thouless transition. The value of the critical exponent [Formula presented] is also studied by analyzing the fluctuation of the order parameter at the criticality and estimated as [Formula presented]. These results are consistent with the prediction by the Kosterlitz-Thouless-Halperin-Nelson-Young theory.

Original language | English |
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Pages (from-to) | 4 |

Number of pages | 1 |

Journal | Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics |

Volume | 69 |

Issue number | 4 |

DOIs | |

Publication status | Published - 2004 |

Externally published | Yes |

## ASJC Scopus subject areas

- Statistical and Nonlinear Physics
- Statistics and Probability
- Condensed Matter Physics