中国物理B ›› 1997, Vol. 6 ›› Issue (1): 35-39.doi: 10.1088/1004-423X/6/1/007

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PHASE TRANSITION IN A NONEQUILIBRIUM POTTS MODEL WITH COMPETING DYNAMICS: A MONTE-CARLO STUDY

郭文安1, 杨展如2   

  1. (1)Department of Physics and Institute of Theoretical Physics, Beijing Normal University, Beijing 100875, China; (2)Department of Physics and Institute of Theoretical Physics, Beijing Normal University, Beijing 100875, China;China Center of Advanced Science and Technology (World Laboratory), P. O. Box 8730, Beijing 100080, China
  • 收稿日期:1995-12-15 出版日期:1997-01-20 发布日期:1997-01-20
  • 基金资助:
    Project supported in part by the National Basic Research Project "Nonlinear Science" of China and by the State Education Commission Grant for doctor study.

PHASE TRANSITION IN A NONEQUILIBRIUM POTTS MODEL WITH COMPETING DYNAMICS: A MONTE-CARLO STUDY

GUO WEN-AN (郭文安)a, YANG ZHAN-RU (杨展如)ab   

  1. a Department of Physics and Institute of Theoretical Physics, Beijing Normal University, Beijing 100875, China; bChina Center of Advanced Science and Technology (World Laboratory), P. O. Box 8730, Beijing 100080, China
  • Received:1995-12-15 Online:1997-01-20 Published:1997-01-20
  • Supported by:
    Project supported in part by the National Basic Research Project "Nonlinear Science" of China and by the State Education Commission Grant for doctor study.

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摘要： The nonequilibrium steady state of three-state Potts model evolving under combined Glauber dynamics at temperature β-1 and Kawasaki dynamics at β′= 0 is studied by Monte-Carlo simulations. As the exchange rate p increases, the phase transition changes from second to first order. The critical exponents of second-order transition are independent of p, and the critical properties for different p belong to the same universality class.

Abstract: The nonequilibrium steady state of three-state Potts model evolving under combined Glauber dynamics at temperature $\beta$-1 and Kawasaki dynamics at $\beta$′= 0 is studied by Monte-Carlo simulations. As the exchange rate p increases, the phase transition changes from second to first order. The critical exponents of second-order transition are independent of p, and the critical properties for different p belong to the same universality class.

中图分类号:  (Dynamic critical phenomena)

  • 64.60.Ht
75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)) 75.10.Hk (Classical spin models)