Abstract
There exist a variety of theoretical models that can be employed in the description of the rearrangements on surfaces. Prominent examples are the coarsening model of Lifshitz and Slyozow and the diffusion aggregation process due to von Smoluchowski. We perform computer simulations on the merging of pores in a two-dimensional Ising model with the goal of determining the conditions under which the system follows one of these paths during reconstruction. The parameters that are varied during the investigation are the size of the pores, their separation and the temperature of the system. It is found that with increasing temperature the transition line moves towards larger distance and radii and broadens for high temperatures.
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