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arXiv 2201.12954cond-mat.stat-mech
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伊辛模型的几何上临界维数

Geometric Upper Critical Dimensions of the Ising Model

Sheng Fang, Zongzheng Zhou, Youjin Deng

摘要:

已知伊辛模型的上临界维数为$d_c=4$,在其之上的临界行为被认为是微不足道的。在此,我们认为,从广泛的模拟,在随机集群表示,伊辛模型同时表现出两个上临界尺寸在$(d_c= 4, d_p=6)$,和临界集群$d \geq d_p$,除了最大的一个,是由指数从渗透普适性。我们预测了丰富多样的几何性质,然后提供强有力的证据,从4到7的维度和完整的图形。我们的发现大大推进了对伊辛模型的理解,伊辛模型是物理学许多分支中的基本系统。

英文摘要:

The upper critical dimension of the Ising model is known to be $d_c=4$, above which critical behavior is regarded as trivial. We hereby argue from extensive simulations that, in the random-cluster representation, the Ising model simultaneously exhibits two upper critical dimensions at $(d_c= 4, d_p=6)$, and critical clusters for $d \geq d_p$, except the largest one, are governed by exponents from percolation universality. We predict a rich variety of geometric properties and then provide strong evidence in dimensions from 4 to 7 and on complete graphs. Our findings significantly advance the understanding of the Ising model, which is a fundamental system in many branches of physics.

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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