Institut für Theoretische Physik, Universität Leipzig, Postfach 100 920, D-04009 Leipzig, Germany.
Phys Rev E. 2016 Mar;93(3):032506. doi: 10.1103/PhysRevE.93.032506. Epub 2016 Mar 28.
We investigate a newly framed two-time property for the nonequilibrium evolution dynamics during the collapse of a homopolymer via Monte Carlo simulations of a model polymer. Our results show evidence of aging effects, as observed in the slow dynamics of structural and spin glasses, along with the presence of a dynamic scaling of the autocorrelation function ∼x(-λ(c)) (x being the ratio of the cluster sizes at two different times). We estimate the value of λ(c) unambiguously by applying a finite-size scaling analysis to the numerical data. The value thus obtained obeys a bound which we predict via general theoretical arguments. The results presented should be of general validity and may trigger direct experimental verification in single-polymer dynamics.
我们通过模型聚合物的蒙特卡罗模拟研究了均聚物坍塌过程中一种新提出的双时间性质。我们的结果表明存在老化效应，这在结构和自旋玻璃的慢动力学中观察到，同时自相关函数的动态标度∼x(-λ(c))（x 是两个不同时间的团簇大小的比值）。我们通过对数值数据进行有限大小标度分析，明确地估计了 λ(c)的值。由此得到的值满足我们通过一般理论论证预测的一个界。所呈现的结果应该具有普遍的有效性，并可能在单聚合物动力学中引发直接的实验验证。
