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arXiv 2602.00962cond-mat.stat-mech
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从域墙微态计数获取临界温度:Potts universality类的拓扑解法

Critical Temperatures from Domain-Wall Microstate Counting: A Topological Solution for the Potts Universality Class

Iowa State University(爱荷华州立大学)

David Vaknin

AI总结:

通过域墙微态计数推导出Potts模型临界温度的普遍关系,结合界面能与构型熵平衡,揭示临界温度由协调依赖的能量成本与总乘积因子的对数比决定,该方法统一了Potts universality类,提供预测工具。

摘要:

我们基于域墙微态计数推导出q状态Potts模型临界温度的普遍关系。通过平衡界面能与构型熵,我们展示临界温度由协调依赖的能量成本与总乘积因子对数的比值决定。该因子分解为一个晶格拓扑常数,代表从底层正交欧几里得空间的投影,以及一个代表q维状态空间马尔可夫采样的项。该框架恢复了二维正方、三角和蜂窝晶格的精确解,并在三维简单立方、bcc、fcc和金刚石几何中达到亚3%的精度。此方法将Potts universality类统一为单一几何分类,揭示相变由界面传播通过晶格流形的饱和所支配,并提供一个预测工具,从单一拓扑校准描述整个q状态家族。

英文摘要:

We derive a universal relation for the critical temperatures of the $q$-state Potts model based on the counting of domain-wall microstates. By balancing interface energy against configurational entropy, we show that the critical temperature is determined by the ratio of the coordination-dependent energy cost to the logarithm of a total multiplicity factor. This factor decomposes into a lattice-topological constant, representing a projection from an underlying orthogonal Euclidean space, and a term representing Markovian sampling in the $q$-dimensional state space. The framework recovers exact solutions for two-dimensional square, triangular, and honeycomb lattices and achieves sub-3\% accuracy for three-dimensional simple cubic, bcc, fcc, and diamond geometries. This approach unifies the Potts universality class into a single geometric classification, revealing that the phase transition is governed by the saturation of interface propagation through the lattice manifold and providing a predictive tool that characterizes the entire $q$-state family from a single topological calibration.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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