Simulating flexible polymers in a potential of randomly distributed hard disks
arXiv:1205.4165 · doi:10.1103/PhysRevE.84.051805
Abstract
We perform equilibrium computer simulations of a two-dimensional pinned flexible polymer exposed to a quenched disorder potential consisting of hard disks. We are especially interested in the high-density regime of the disorder, where subtle structures such as cavities and channels play a central role. We apply an off-lattice growth algorithm proposed by Garel and Orland [J. Phys. A 23, L621 (1990)], where a distribution of polymers is constructed in parallel by growing each of them monomer by monomer. In addition we use a multicanonical Monte Carlo method in order to cross-check the results of the growth algorithm. We measure the end-to-end distribution and the tangent-tangent correlations. We also investigate the scaling behavior of the mean square end-to-end distance in dependence of the monomer number. While the influence of the potential in the low-density case is merely marginal, it dominates the configurational properties of the polymer for high densities.
arXiv comment9 pages, 11 figures
References in corpus (8)
- Multicanonical Ensemble: A New Approach to Simulate First-order Phase Transitions
- Microcanonical Analyses of Peptide Aggregation Processes
- Conformational Transitions of Non-Grafted Polymers Near an Adsorbing Substrate
- Multifractality of self-avoiding walks on percolation clusters
- Scaling behavior of self-avoiding walks on percolation clusters
- Walking on fractals: diffusion and self-avoiding walks on percolation clusters
- Replica field theory for a polymer in random media
- Polymers with self-avoiding interaction in random media: a localization-delocalization transition
Cited by in corpus (5)
- Parallel multicanonical study of the three-dimensional Blume-Capel model
- Massively parallel multicanonical simulations
- Persistence-Length Renormalization of Polymers in a Crowded Environment of Hard Disks
- Polymers in disordered environments
- Influence of lattice disorder on the structure of persistent polymer chains