Straightening of Thermal Fluctuations in Semi-Flexible Polymers by Applied Tension
Udo Seifert, Wolfgang Wintz, Philip Nelson
Abstract
We investigate the propagation of a suddenly applied tension along a thermally excited semi-flexible polymer using analytical approximations, scaling arguments and numerical simulation. This problem is inherently non-linear. We find sub-diffusive propagation with a dynamical exponent of 1/4. By generalizing the internal elasticity, we show that tense strings exhibit qualitatively different tension profiles and propagation with an exponent of 1/2.
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