Geometric properties of two-dimensional O(n) loop configurations

Geometric properties of two-dimensional O(n) loop configurations
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二维 O(n) 循环配置的几何性质

DOI:
10.1088/1751-8113/40/13/001
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发表时间:
2006-08
影响因子:
2.1
通讯作者:
Qian, Xiaofeng
Qian, Xiaofeng
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Blote, Henk W. J.;Guo, Wenan;Deng, Youjin;Ding, Chengxiang;Qian, Xiaofeng

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我们研究了O(n)圈配置在二维的分形几何通过缩放和Monte Carlo方法,并比较结果与基于库仑气体技术的预测。蒙特卡罗算法适用于非整数n的模型,并使用局部更新。虽然这些更新通常会导致回路连通性的非局部修改,但每次更新所需的操作数量仅为1阶。本文将蒙特卡罗算法应用于蜂窝O(n)模型,并给出了n的几个值,包括非整数值。因此,我们确定的标度指数,描述的分形性质的O(n)循环在临界。数值分析的结果与理论预测一致。
We study the fractal geometry of O(n) loop configurations in two dimensions by means of scaling and a Monte Carlo method, and compare the results with predictions based on the Coulomb gas technique. The Monte Carlo algorithm is applicable to models with noninteger n and uses local updates. Although these updates typically lead to nonlocal modifications of loop connectivities, the number of operations required per update is only of order 1. The Monte Carlo algorithm is applied to the honeycomb O(n) model for several values of n, including noninteger ones. We thus determine scaling exponents that describe the fractal nature of O(n) loops at criticality. The results of the numerical analysis agree with the theoretical predictions.
DOI: --
发表时间: 2004
期刊: --
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