论文标题
ISIN接口的异常动态缩放
Anomalous dynamic scaling of Ising interfaces
论文作者
论文摘要
直到最近,预计固有异常缩放的渐近发生可能需要对动力学上的粗糙界面(例如淬灭混乱或形态不稳定性)伴随效果。但是,最近已经报道了针对时间依赖性噪声所主导的更简单情况的反例,如与H. \ \ dashti-naserabadi {\ em et al。} \ [phys。\ [phys。在这里,我们重新审视该系统,以在两个和三个维度(分别一个和二维接口)中表征其时间依赖性行为。虽然3D情况似乎以超出临界动力学的快速演化为主,但在2D情况下,相关时间依赖的Ginzburg-Landau方程的数值模拟在整个时间的整个时间进化过程中,与在平衡情况下相同的静态(粗糙度)指数和相同的固有异常缩放量表都相同的静态(粗糙度)指数。但是,动态指数被认为在两个不同的值之间跨越,没有一个可以通过以前已知的动力学粗糙识别识别。此外,对较大系统尺寸的仿真表明,最大尺度的缩放行为分解,这表明先前报道的缩放行为可能有效,并且仅限于相对较小的系统。
Until very recently, the asymptotic occurrence of intrinsic anomalous scaling has been expected to require concomitant effects for kinetically rough interfaces, like quenched disorder or morphological instabilities. However, counterexamples have been recently reported for simpler situations dominated by time-dependent noise, as in the discrete growth system associated with an Ising model proposed by H.\ Dashti-Naserabadi {\em et al.}\ [Phys.\ Rev.\ E {\bf 100}, 060101(R) (2019)], who assessed the equilibrium behavior of the model. Here we revisit this system to characterize its time-dependent behavior in two and three dimensions (one-and two-dimensional interfaces, respectively). While the 3D case seems dominated by a fast evolution beyond critical dynamics, in the 2D case numerical simulations of an associated time-dependent Ginzburg-Landau equation retrieve the same static (roughness) exponents and the same intrinsic anomalous scaling Ansatz as in the equilibrium case, throughout the full time evolution. However, the dynamic exponent is seen to cross over between two different values, none of which enables identification with previously known universality classes of kinetic roughening. Simulations for larger system sizes moreover suggest breakdown of scaling behavior at the largest scales, suggesting that the previously reported scaling behavior may be effective and restricted to relatively small systems.