6533b7d0fe1ef96bd125a418
RESEARCH PRODUCT
NOISE EFFECTS IN POLYMER DYNAMICS
Nicola PizzolatoBernardo SpagnoloAlessandro Fiasconarosubject
Physicschemistry.chemical_classificationPolymer DynamicsQuantitative Biology::BiomoleculesStatistical Mechanics (cond-mat.stat-mech)Applied Mathematicsmedia_common.quotation_subjectDynamics (mechanics)FOS: Physical sciencesPolymerInertiaStandard deviationCondensed Matter::Soft Condensed MatterMolecular dynamicschemistryModeling and SimulationMetastabilityRectangular potential barrierStatistical physicsFirst-hitting-time modelEngineering (miscellaneous)Condensed Matter - Statistical Mechanicsmedia_commondescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-01-01 | International Journal of Bifurcation and Chaos |