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arXiv cond-mat/0010488cond-mat.softcond-mat.stat-mech
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弹性圆环的热脉动

Thermal Fluctuations of Elastic Ring

Y. Rabin, S. Panyukov

摘要:

研究了弹性小圆环上的热涨落效应。我们推导出解析表达式的关联函数的欧拉角,为实空间两点关联函数和概率分布的扭动,作为一个函数的持久长度,确定相对于弯曲和扭曲的刚度。波动幅度在扭转刚度消失的极限处发散。有一个小规模的政权,其中扭曲和扭动模式是解耦的,到一个大规模的政权,其中扭曲影响的空间配置的环的交叉。

英文摘要:

We study the effects of thermal fluctuations on a small elastic ring. We derive analytical expressions for the correlation functions of the Euler angles, for the real space two--point correlation functions and for the probability distribution of writhe, as a function of the persistence lengths that determine the rigidity with respect to bending and twist. Fluctuation amplitudes diverge in the limit of vanishing twist rigidity. There is crossover from a small scale regime in which twist and writhe modes are uncoupled, to a large scale regime in which twist affects the spatial configurations of the ring.

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。

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