Noise effects in polymer dynamics

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.

6 pages, 5 figures, to appear in Intern. Journ. of Bifurcation and Chaos, 2008

References in corpus (4)

• Noise-enhanced stability of periodically driven metastable states
• Signatures of Noise Enhanced Stability in Metastable States
• Role of the initial conditions on the enhancement of the escape time in static and fluctuating potentials
• Universality and Shannon entropy of codon usage

Cited by in corpus (4)

• Phase dynamics in graphene-based Josephson junctions in the presence of thermal and correlated fluctuations
• Translocation time of periodically forced polymer chains
• Translocation of a polymer chain driven by a dichotomous noise
• Noise driven translocation of short polymers in crowded solutions