Dynamics of unbinding of polymers in a random medium

TL;DR

This paper investigates how aging affects the unbinding process of a double-stranded polymer in a disordered medium using Monte Carlo simulations, revealing the influence of disorder and waiting time on dynamics.

Contribution

It introduces a lattice model to study aging effects on polymer unbinding in a random medium, focusing on overlaps and waiting time dependence.

Findings

Unbinding dynamics depend on the waiting time and disorder.

Overlap measures reveal aging effects.

Disorder significantly influences unbinding behavior.

Abstract

We have studied the aging effect on the dynamics of unbinding of a double stranded directed polymer in a random medium. By using the Monte Carlo dynamics of a lattice model in two dimensions, for which disorder is known to be relevant, the unbinding dynamics is studied by allowing the bound polymer to relax in the random medium for a waiting time and then allowing the two strands to unbind. The subsequent dynamics is formulated in terms of the overlap of the two strands and also the overlap of each polymer with the configuration at the start of the unbinding process. The interrelations between the two and the nature of the dependence on the waiting time are studied.