Phase Transition of the Ising Model on a 3-Dimensional Fractal Lattice

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Hauptverfasser: Genzor, Jozef, Krčmár, Roman, Ueda, Hiroshi, Kochan, Denis, Gendiar, Andrej, Nishino, Tomotoshi
Format: Preprint
Veröffentlicht: 2025
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author Genzor, Jozef
Krčmár, Roman
Ueda, Hiroshi
Kochan, Denis
Gendiar, Andrej
Nishino, Tomotoshi
author_facet Genzor, Jozef
Krčmár, Roman
Ueda, Hiroshi
Kochan, Denis
Gendiar, Andrej
Nishino, Tomotoshi
contents The critical behavior of the classical Ising model on a three-dimensional fractal lattice with Hausdorff dimension $d_H = \ln32 / \ln4 = 2.5$ is investigated using the higher-order tensor renormalization group (HOTRG) method. We determine the critical temperature $T_c \approx 2.65231$ and the critical exponents for magnetization $β\approx 0.059$ and field response $δ\approx 35$. Unlike a previously studied 2D fractal with $d_H \approx 1.792$, the specific heat for this 3D fractal exhibits a divergent singularity at $T_c$. The results are compared with those for regular lattices and other fractal structures to elucidate the role of dimensionality in critical phenomena.
format Preprint
id arxiv_https___arxiv_org_abs_2506_17053
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Phase Transition of the Ising Model on a 3-Dimensional Fractal Lattice
Genzor, Jozef
Krčmár, Roman
Ueda, Hiroshi
Kochan, Denis
Gendiar, Andrej
Nishino, Tomotoshi
Statistical Mechanics
The critical behavior of the classical Ising model on a three-dimensional fractal lattice with Hausdorff dimension $d_H = \ln32 / \ln4 = 2.5$ is investigated using the higher-order tensor renormalization group (HOTRG) method. We determine the critical temperature $T_c \approx 2.65231$ and the critical exponents for magnetization $β\approx 0.059$ and field response $δ\approx 35$. Unlike a previously studied 2D fractal with $d_H \approx 1.792$, the specific heat for this 3D fractal exhibits a divergent singularity at $T_c$. The results are compared with those for regular lattices and other fractal structures to elucidate the role of dimensionality in critical phenomena.
title Phase Transition of the Ising Model on a 3-Dimensional Fractal Lattice
topic Statistical Mechanics
url https://arxiv.org/abs/2506.17053