Dynamics of the constrained polymer collapse

被引：6
作者：
Aranson, IS
Tsimring, LS
机构：
[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA
[2] Univ Calif San Diego, Inst Nonlinear Sci, La Jolla, CA 92093 USA
来源：
EUROPHYSICS LETTERS | 2003年 / 62卷 / 06期
关键词：
D O I：
10.1209/epl/i2003-00450-8
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The dynamics of polymer collapse with a fixed distance between endpoints is studied analytically and numerically by the Nose-Hoover algorithm. We find that at the pearling stage of the collapse the number of pearls decays as t(-1/2) leading to anomalously long collapse time. To understand the effect of Stokes drag we reduced the problem of long-polymer-chain collapse to the one-dimensional diffusion-limited coalescence of particles with the mass-dependent mobility. In this case the number of pearls decays slower, as t(-3/7).
引用
收藏
页码：848 / 854
页数：7
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