arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0903.4816cond-mat.softcond-mat.stat-mech
收藏

关于简单polymer模型中的4点关联函数

On 4-point correlation functions in simple polymer models

Johannes-Geert Hagmann, Karol K. Kozlowski, Nikos Theodorakopoulos, Michel Peyrard

摘要:

我们推导了两个简单的聚合物模型,自由连接链和离散的柔性模型与最近邻相互作用的carnival距离的协方差的精确公式。我们表明,即使在相互作用的情况下,相关性存在,只要两个距离至少部分地共享相同的部分。对于相互作用的情况下,我们表明,天真的期望增加的相关性,增加相互作用强度只持有在一个有限的范围内的值。对今后的单分子实验提出了一些建议。

英文摘要:

We derive an exact formula for the covariance of cartesian distances in two simple polymer models, the freely-jointed chain and a discrete flexible model with nearest-neighbor interaction. We show that even in the interaction-free case correlations exist as long as the two distances at least partially share the same segments. For the interacting case, we demonstrate that the naive expectation of increasing correlations with increasing interaction strength only holds in a finite range of values. Some suggestions for future single-molecule experiments are made.

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。

↑