arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2310.03322cond-mat.stat-mech
收藏

动力学粗糙界面的有限时间标度

Finite-time scaling for kinetic rough interfaces

Rahul Chhimpa, Avinash Chand Yadav

AI总结:

本研究提出动力学粗糙界面的有限时间标度方法,可系统估计临界指数与标度函数以确定普适类,验证了各向同性自组织界面模型与Sneppen模型A同属一类,并提出各向异性版本属于无张力一维KPZ方程普适类。

摘要:

我们研究了具有高度-高度关联时空标度不变性的动力学粗糙界面离散模型。通用标度理论表明,高度剖面的动力学结构因子可唯一表征其底层动力学。我们提出了一种有限时间标度方法,可系统地估计临界指数和标度函数,最终准确确定其普适类。作为示例,我们研究了一类具有极值动力学的随机介质中自组织界面模型。各向同性版本呈现出面状图案,数值计算表明其与Sneppen(模型A)属于同一普适类。我们还引入了Sneppen(模型A)的各向异性版本,并指出该模型属于无张力一维Kardar-Parisi-Zhang方程的普适类。

英文摘要:

We consider discrete models of kinetic rough interfaces that exhibit space-time scale-invariance in height-height correlation. A generic scaling theory implies that the dynamical structure factor of the height profile can uniquely characterize the underlying dynamics. We provide a finite-time scaling that systematically allows an estimation of the critical exponents and the scaling functions, eventually establishing the universality class accurately. As an illustration, we investigate a class of self-organized interface models in random media with extremal dynamics. The isotropic version shows a faceted pattern and belongs to the same universality class (as shown numerically) as the Sneppen (model A). We also introduce an anisotropic version of the Sneppen (model A) and suggest that the model belongs to the universality class of the tensionless one-dimensional Kardar-Parisi-Zhang equation.

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。

↑