| 二维八态波茨模型的动力学指数 |
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| 引用本文： | 雷晓蔚. 二维八态波茨模型的动力学指数[J]. 渝西学院学报(自然科学版), 2011, 0(3): 20-22,26 |
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| 作者姓名： | 雷晓蔚 |
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| 作者单位： | 重庆文理学院物理系,重庆永川402160 |
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| 基金项目： | 重庆市教委科学技术研究项目（KJ091212）; 重庆文理学院科技项目（Y2007YJ40） |
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| 摘 要： | 采用大规模动力学蒙特卡罗模拟方法,对二维八态正方格点波茨模型的动力学指数展开数值研究.以普适的动力学标度形式为基础,研究系统从完全有序态出发的动力学驰豫过程,通过测量在不同无序幅下的宾德累积量,确定出更精确的动力学指数z.结果表明z与无序幅的取值有关,并且远远大于二维伊辛模型的z值,表明二维随机链波茨模型与二维伊辛模型不属于同一普适类.
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| 关 键 词： | 蒙特卡罗法 动力学指数 波茨模型 无序幅 |
The dynamic exponent of two-dimensional eight-state Potts model |
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| LEI Xiao-wei. The dynamic exponent of two-dimensional eight-state Potts model[J]. , 2011, 0(3): 20-22,26 |
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| Authors: | LEI Xiao-wei |
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| Affiliation: | LEI Xiao-wei (Department of Physics,Chongqing University of Arts and Sciences,Yongchuan Chongqing 402160,China) |
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| Abstract: | With a large-scale Monte Carlo simulation,the two-dimensional eight-state Potts model of square lattice is investigated.Starting from an ordered initial state,the dynamic evolution of the Binder cumulant is studied.Based on dynamic scaling ansatz,the dynamic exponent z is determined with relatively high accuracy.It is clear that z depends on the disorder amplitude and is much bigger than that of the two-dimensional Ising model.The two-dimensional random-bond Potts model is not in the same dynamic universality class as the two-dimensional Ising model. |
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| Keywords: | Monte Carlo methods dynamic exponent Potts model disorder amplitude |
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