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arXiv 0807.4759cond-mat.stat-mech
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非格点相互作用粒子动态Monte Carlo研究中无排斥方法的效率

Efficiency of Rejection-Free Methods for Dynamic Monte Carlo Studies of Off-lattice Interacting Particles

Marta L. Guerra, M. A. Novotny, Hiroshi Watanabe, Nobuyasu Ito

摘要:

计算了$d$维非格点均匀粒子通过排斥幂律势$r^{-p}$相互作用的无排斥动态蒙特卡罗方法的效率。理论上我们发现在低温和/或高密度的极限下,算法的效率与$ρ^{\tfrac{p+2}{2}}T^{-\tfrac{d}{2}}$与粒子密度$ρ$和温度$T$渐近成正比。对不同功率$p$的一维、二维和三维系统进行了动态蒙特卡罗模拟,模拟结果与理论预测一致。

英文摘要:

We calculate the efficiency of a rejection-free dynamic Monte Carlo method for $d$-dimensional off-lattice homogeneous particles interacting through a repulsive power-law potential $r^{-p}$. Theoretically we find the algorithmic efficiency in the limit of low temperatures and/or high densities is asymptotically proportional to $ρ^{\tfrac{p+2}{2}}T^{-\tfrac{d}{2}}$ with the particle density $ρ$ and the temperature $T$. Dynamic Monte Carlo simulations are performed in 1-, 2- and 3-dimensional systems with different powers $p$, and the results agree with the theoretical predictions.

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