Dynamic Fluctuations of Semiflexible Polymers
R. Everaers, F. Julicher, A. Ajdari, A. C. Maggs
Abstract
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 t7/8. These fluctuations are correlated over a length which varies as t1/8. Our results are pertinent to the interpretation of high frequency microrheology experiments in actin solutions.
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