Transverse fluctuations of grafted polymers

Details Transverse fluctuations of grafted polymers Transverse fluctuations of grafted polymers

2003-11-04

arxiv.org/abs/physics/0311012v1

Phys. Rev. E 69, 021801 (2004)

Physics

Biological Physics

10 pages, 4 figures, submitted to Physical Review E

Scientific paper

10.1103/PhysRevE.69.021801

We study the statistical mechanics of grafted polymers of arbitrary stiffness in a two-dimensional embedding space with Monte Carlo simulations. The probability distribution function of the free end is found to be highly anisotropic and non-Gaussian for typical semiflexible polymers. The reduced distribution in the transverse direction, a Gaussian in the stiff and flexible limits, shows a double peak structure at intermediate stiffnesses. We also explore the response to a transverse force applied at the polymer free end. We identify F-Actin as an ideal benchmark for the effects discussed.

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