Berlin 2012 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 22: Posters I

DY 22.4: Poster

Mittwoch, 28. März 2012, 17:00–19:00, Poster A

Simulating flexible polymers in a potential of randomly distributed hard disks — Sebastian Schöbl, •Johannes Zierenberg, and Wolfhard Janke — Institut für Theoretische Physik, Universität Leipzig, Germany

Recently, we performed equilibrium computer simulations of a two-dimensional pinned flexible polymer exposed to a quenched disorder potential consisting of hard disks [1]. Throughout the study, we applied two conceptionally different algorithms, an off-lattice growth algorithm and a multicanonical Monte Carlo method, in order to cross-check the results obtained. We measured the the end-to-end distribution and the tangent-tangent correlations and investigated the scaling behavior of the mean square end-to-end distance for short chains. While the influence of the potential in the low-density case is merely marginal, it was possible to show that it dominates the configurational properties of the polymer for high densities.

[1] S. Schöbl, J. Zierenberg, and W. Janke, Phys. Rev. E 84, 051805 (2011)