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Critical behavior of hard-core lattice gases: Wang-Landau sampling with adaptive windows

机译:硬核晶格气体的临界行为:具有自适应窗口的Wang-Landau采样

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Critical properties of lattice gases with nearest-neighbor exclusion are investigated via adaptive-window Wang-Landau sampling (WLS) on the square and simple cubic lattices, for which the model is known to exhibit an Ising-like phase transition. We study the particle density, order parameter, compressibility, Binder cumulant and susceptibility, in efforts to test WLS, which has been used quite widely in recent years, in the context of lattice gases. Of considerable interest is whether it is possible to estimate critical exponents reliably using WLS with adaptive windows. We find that the method yields results in fair agreement with exact values (in two dimensions) and numerical estimates (in three dimensions).
机译:通过正方形和简单立方晶格上的自适​​应窗口Wang-Landau采样(WLS),研究了具有最近邻排斥的晶格气体的临界特性,已知该模型表现出类似于Ising的相变。为了测试WLS,我们研究了粒子密度,阶数参数,可压缩性,Binder累积量和磁化率,近年来,WLS在晶格气体环境中得到了广泛的应用。令人关注的是,是否有可能使用带有自适应窗口的WLS可靠地估计关键指数。我们发现该方法产生的结果与精确值(在两个维度上)和数字估计值(在三个维度上)保持合理的一致性。

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