On 4-point correlation functions in simple polymer models
Soft Condensed Matter
2009-04-17 v2 Statistical Mechanics
Abstract
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.
Cite
@article{arxiv.0903.4816,
title = {On 4-point correlation functions in simple polymer models},
author = {Johannes-Geert Hagmann and Karol K. Kozlowski and Nikos Theodorakopoulos and Michel Peyrard},
journal= {arXiv preprint arXiv:0903.4816},
year = {2009}
}