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arXiv 1104.4030cond-mat.stat-mech
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薄图上Ising自旋的关联函数

Correlation functions of Ising spins on thin graphs

Piotr Bialas, Andrzej K. Oleś

摘要:

本文用解析和数值方法研究了定义在$ϕ^q$场论Feynman图上的具有铁磁耦合的Ising自旋模型,该模型具有平均场相变.我们明确地计算了大体积极限下对称相和对称破缺相的关联函数。与蒙特卡罗模拟得到的有限尺寸系统的结果一致。

英文摘要:

We investigate analytically and numerically an Ising spin model with ferromagnetic coupling defined on random graphs corresponding to Feynman diagrams of a $ϕ^q$ field theory, which exhibits a mean field phase transition. We explicitly calculate the correlation functions both in the symmetric and in the broken symmetry phase in the large volume limit. They agree with the results for finite size systems obtained from Monte Carlo simulations.

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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