Critical exponents of isotropic-hexatic phase transition in the hard-disk system

Hiroshi Watanabe, Satoshi Yukawa, Yukiyasu Ozeki, Nobuyasu Ito

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


A nonequilibrium relaxation (NER) method was proposed to study the nonequilibrium relaxation behavior of a bond-orientational order parameter. The parameter was introduced to characterize the two-dimensional melting. Up to 512 independent samples were averaged and about 109 collisions were performed for each density. Time evolution of the system was performed by event-driven molecular dynamics simulation. The NER behavior of the bond orientational parameter indicates that the transition between the isotopic and hexatic phase is a Kosterlitz-Thouless transition.

Original languageEnglish
Article number045103
Pages (from-to)045103-1-045103-4
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Issue number4 2
Publication statusPublished - 2004 Apr
Externally publishedYes

ASJC Scopus subject areas

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


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