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Updated: Apr 27, 2026

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A generalization of the bond fluctuation model to viscoelastic environments
1German Cancer Research Center (DKFZ), Division Biophysics of Macromolecules, INF 580, D-69120 Heidelberg, Germany.
Abstract:
A lattice-based simulation method for polymer diffusion in a viscoelastic medium is presented. This method combines the eight-site bond fluctuation model with an algorithm for the simulation of fractional Brownian motion on the lattice. The method applies to unentangled self-avoiding chains and is probed for anomalous diffusion exponents α between 0.7 and 1.0. The simulation results are in very good agreement with the predictions of the generalized Rouse model of a self-avoiding chain polymer in a viscoelastic medium.
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