Self-reptation and slow topological time scale of knotted polymers

Details Self-reptation and slow topological time scale of knotted polymers Self-reptation and slow topological time scale of knotted polymers

2007-05-16

arxiv.org/abs/0705.2291v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures

Scientific paper

We investigate the Rouse dynamics of a flexible ring polymer with a prime knot. Within a Monte Carlo approach, we locate the knot, follow its diffusion, and observe the fluctuations of its length. We characterise a topological time scale, and show that it is related to a self-reptation of the knotted region. The associated dynamical exponent, $z_T=2.32\pm.1$, can be related to that of the equilibrium knot length distribution and determines the behaviour of several dynamical quantities.

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