Monomer dynamics of a wormlike chain
Soft Condensed Matter
2011-11-22 v2 Statistical Mechanics
Abstract
We derive the stochastic equations of motion for a tracer that is tightly attached to a semiflexible polymer and confined or agitated by an externally controlled potential. The generalised Langevin equation, the power spectrum, and the mean-square displacement for the tracer dynamics are explicitly constructed from the microscopic equations of motion for a weakly bending wormlike chain by a systematic coarse-graining procedure. Our accurate analytical expressions should provide a convenient starting point for further theoretical developments and for the analysis of various single-molecule experiments and of protein shape fluctuations.
Cite
@article{arxiv.1108.4553,
title = {Monomer dynamics of a wormlike chain},
author = {Jakob Tómas Bullerjahn and Sebastian Sturm and Lars Wolff and Klaus Kroy},
journal= {arXiv preprint arXiv:1108.4553},
year = {2011}
}
Comments
6 pages, 4 figures