Dynamic Fluctuations of Semiflexible Polymers

Details Dynamic Fluctuations of Semiflexible Polymers Dynamic Fluctuations of Semiflexible Polymers

1998-08-03

arxiv.org/abs/cond-mat/9808010v1

Physics

Condensed Matter

Soft Condensed Matter

7 pages 3 figures revtex source

Scientific paper

10.1103/PhysRevLett.82.3717

We develop a scaling theory to describe dynamic fluctuations of a semiflexible polymer and find several distinct regimes. We performed simulations to characterize the longitudinal and transverse dynamics; using ensemble averaging for a range of different degrees of coarse-graining we avoid the problems of slow equilibration often encountered in simulations. We find that the longitudinal fluctuations of a semiflexible object scales as t^7/8. These fluctuations are correlated over a length which varies as t^1/8. Our results are pertinent to the interpretation of high frequency microrheology experiments in actin solutions.

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