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二维格气模型中动力学相变与自组织临界现象

物理学报, 2003, 52(11): 2757-2761.
DOI: 10.7498/aps.52.2757
CSTR: 32037.14.aps.52.2757

Dynamical phase transition and self-organized critical phenomena in the two-dim ensional gas lattice model

Acta Phys. Sin., 2003, 52(11): 2757-2761.
DOI: 10.7498/aps.52.2757
CSTR: 32037.14.aps.52.2757
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  • 摘要

    应用数值方法研究了一种具有封闭边界条件的Manna沙堆模型——格气模型.通过模拟，发现 系统存在一个临界密度ρc≈0.684…，得到了相应的临界指数α≈0.452±0.02 ，并且还发现只有在特定的粒子数密度范围，系统才能体现出自组织临界性.

     

    Abstract

    A renovated Manna model is studied by computer simulation. The dynamic behavior of the system is changed evidently with the density of particle number.There is a critical particle number density (PND)ρc≈0.684… and critical exp onent α=0.452±0.02 at this density. Self-organized critical phenomena occur only at certain ranges of PND.

     

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