arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.03150cond-mat.stat-mech
收藏

两态系统松弛的连续时间随机游走模型

Continuous-time random walk model of relaxation of two-state systems

S. I. Denisov, Yu. S Bystrik

摘要:

利用连续时间随机游走(CTRW)方法,我们研究了元素按照二分过程演化的两态系统的弛豫现象。松弛的两个特征,等待时间差的概率密度函数和松弛律,是我们特别感兴趣的。对于系统的特征在于Erlang分布的等待时间,我们考虑不同的制度的放松,并表明,在一定条件下,放松过程可以是非单调的。通过研究弛豫过程的渐近行为,我们证明了等待时间分布的重尾和超重尾分别对应于慢弛豫和超慢弛豫。

英文摘要:

Using the continuous-time random walk (CTRW) approach, we study the phenomenon of relaxation of two-state systems whose elements evolve according to a dichotomous process. Two characteristics of relaxation, the probability density function of the waiting times difference and the relaxation law, are of our particular interest. For systems characterized by Erlang distributions of waiting times, we consider different regimes of relaxation and show that, under certain conditions, the relaxation process can be non-monotonic. By studying the asymptotic behavior of the relaxation process, we demonstrate that heavy and superheavy tails of waiting time distributions correspond to slow and superslow relaxation, respectively.

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。

↑