Probability-changing cluster algorithm for two-dimensional XY and clock models

Yusuke Tomita, Yutaka Okabe

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

We extend the newly proposed probability-changing cluster (PCC) Monte Carlo algorithm to the study of systems with the vector order parameter. Wolff's idea of the embedded cluster formalism is used for assigning clusters. The Kosterlitz-Thouless (KT) transitions for the two-dimensional (2D) XY and q-state clock models are studied by using the PCC algorithm. Combined with the finite-size scaling analysis based on the KT form of the correlation length, ξαexp(c/√T/TKT - 1), we determine the KT transition temperature and the decay exponent η as TKT = 0.8933(6) and η = 0.243(4) for the 2D XY model. We investigate two transitions of the KT type for the 2D q-state clock models with q = 6,8,12 and confirm the prediction of η = 4/q2 at T1, the low-temperature critical point between the ordered and XY-like phases, systematically.

Original languageEnglish
Article number184405
Pages (from-to)1844051-1844055
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number18
Publication statusPublished - 2002 May 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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