arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0810.1582cond-mat.stat-mech
收藏

高分子动力学中的噪声效应

Noise effects in polymer dynamics

N. Pizzolato, A. Fiasconaro, B. Spagnolo

摘要:

研究了噪声对亚稳态存在下链状分子越过势垒的动力学行为的影响。采用了柔性聚合物的二维随机Rouse模型来模拟分子动力学,并考虑了相邻单体之间的相互作用。我们得到的平均首次通过时间和它的标准偏差,聚合物的惯性中心,与噪声强度的非单调行为。这些研究结果揭示了噪声引起的平均穿越时间的影响。聚合物长度的作用也进行了研究。

英文摘要:

The study of the noise induced effects on the dynamics of a chain molecule crossing a potential barrier, in the presence of a metastable state, is presented. A two-dimensional stochastic version of the Rouse model for a flexible polymer has been adopted to mimic the molecular dynamics and to take into account the interactions between adjacent monomers. We obtain a nonmonotonic behavior of the mean first passage time and its standard deviation, of the polymer centre of inertia, with the noise intensity. These findings reveal a noise induced effect on the mean crossing time. The role of the polymer length is also investigated.

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。

↑