arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2409.01434cond-mat.stat-mechcond-mat.dis-nnmath-phmath.MP
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具有淬火表面无序的各向同性方格伊辛模型

The anisotropic square lattice Ising model with quenched surface disorder

Fakultät für Physik, Universität Duisburg-Essen and CENIDE(杜伊斯堡-埃森大学物理学院及CENIDE)

Luca Cervellera, Oliver Oing, Jan Büddefeld, Alexander Hahn, Alfred Hucht

AI总结:

该研究针对圆柱几何下带淬火表面无序的各向异性方格伊辛模型,通过精确枚举法计算临界状态下的表面自由能等物理量,发现二维中淬火表面无序无关但会产生对数修正。

摘要:

采用精确枚举法,针对圆柱几何中一个表面带有淬火表面无序、具有各向异性耦合的方格伊辛模型,在临界状态下计算了表面自由能、临界卡西米尔振幅及卡西米尔力。系统形状由长宽比$L/M$表征,其中圆柱长度$L$可取任意值(包括$L\to\fty$),周长$M$取值范围为4至54,对应多达$2^{54}$次数值精确自由能计算。对$M\to\fty$的仔细外推表明,淬火表面无序在二维中无关紧要,但会产生对数修正。

英文摘要:

Using exact enumeration, the surface free energy as well as the critical Casimir amplitude and Casimir force are calculated for the square lattice Ising model with anisotropic couplings and quenched surface disorder on one surface in cylinder geometry at criticality. The system shape is characterized by the aspect ratio $L/M$, where the cylinder length $L$ can take arbitrary values, including $L\to\infty$, while the circumference $M$ is varied from $M=4$ to $M=54$, resulting in up to $2^{54}$ numerically exact free energy calculations. A careful $M\to\infty$ extrapolation shows that quenched surface disorder is irrelevant in two dimensions, but gives rise to logarithmic corrections.

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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