搜索

x
中国物理学会期刊

含复杂近邻的二维正方格子键渗流的蒙特卡罗模拟

CSTR: 32037.14.aps.71.20211757

Monte Carlo simulation of bond percolation on square lattice with complex neighborhoods

CSTR: 32037.14.aps.71.20211757
PDF
HTML
导出引用
  • 基于高效的单团簇生长算法, 采用蒙特卡罗方法模拟了考虑最近邻、次近邻, 直至第五近邻格点的二维正方格子的键渗流. 计算得到了二十余种格点模型高精度的键渗流阈值, 并深入探讨了渗流阈值p_\rm c与格点结构之间的关联. 通过引入参数\xi = \displaystyle\sum\nolimits_i z_i r_i^2 / i (其中z_ir_i分别为第i近邻格点的配位数及到中心格点的距离)来消除“简并”, 研究发现p_\rm cξ的变化较好地满足幂律关系p_\rm c \propto \xi^-\gamma, 数值拟合得\gamma \approx 1.

     

    Based on an effective single cluster growth algorithm, bond percolation on square lattice with the nearest neighbors, the next nearest neighbors, up to the 5th nearest neighbors are investigated by Monte Carlo simulations. The bond percolation thresholds for more than 20 lattices are deduced, and the correlations between percolation threshold p_\rm c and lattice structures are discussed in depth. By introducing the index \xi = \displaystyle\sum\nolimits_i z_i r_i^2 / i to remove the degeneracy, it is found that the thresholds follow a power law p_\rm c \propto \xi^-\gamma, with \gamma \approx 1, where z_i is the ith neighborhood coordination number, and r_i is the distance between sites in the i-th coordination zone and the central site.

     

    目录

    /

    返回文章
    返回