Straightening of Thermal Fluctuations in Semi-Flexible Polymers by Applied Tension

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Physical Sciences and Mathematics
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Seifert, Udo
Wintz, Wolfgang
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We investigate the propagation of a suddenly applied tension along a thermally excited semiflexible polymer using analytical approximations, scaling arguments, and numerical simulation. This problem is inherently nonlinear. We find subdiffusive 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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1996-12-01
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Physical Review Letters
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