Geometrical properties of Potts model during the coarsening regime

Details Geometrical properties of Potts model during the coarsening regime Geometrical properties of Potts model during the coarsening regime

2011-12-08

arxiv.org/abs/1112.1736v1

Physical Review E 85, 021135 (2012)

Physics

Condensed Matter

Disordered Systems and Neural Networks

12 pages

Scientific paper

10.1103/PhysRevE.85.021135

We study the dynamic evolution of geometric structures in a poly-degenerate system represented by a $q$-state Potts model with non-conserved order parameter that is quenched from its disordered into its ordered phase. The numerical results obtained with Monte Carlo simulations show a strong relation between the statistical properties of hull perimeters in the initial state and during coarsening: the statistics and morphology of the structures that are larger than the averaged ones are those of the initial state while the ones of small structures are determined by the curvature driven dynamic process. We link the hull properties to the ones of the areas they enclose. We analyze the linear von-Neumann--Mullins law, both for individual domains and on the average, concluding that its validity, for the later case, is limited to domains with number of sides around 6, while presenting stronger violations in the former case.

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