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arXiv · 0810.1582

Noise effects in polymer dynamics

N. Pizzolato·A. Fiasconaro·B. Spagnolo
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Abstract

The study of the noise induced effects on the dynamics of a chain molecule crossing a potential barrier, in the presence of a metastable state, is presented. A two-dimensional stochastic version of the Rouse model for a flexible polymer has been adopted to mimic the molecular dynamics and to take into account the interactions between adjacent monomers. We obtain a nonmonotonic behavior of the mean first passage time and its standard deviation, of the polymer centre of inertia, with the noise intensity. These findings reveal a noise induced effect on the mean crossing time. The role of the polymer length is also investigated.

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N. Pizzolato, A. Fiasconaro, B. Spagnolo. 2008-10-09. Noise effects in polymer dynamics. https://doi.org/10.1142/s0218127408022135

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