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Random deposition43Random depositionsimplest possible growth modelPick a random column.Add a particle on top ofthat column = 1/2ξ = 1/2hW~ t~t1/244
Random deposition with surface diffusionParticle can move a short distance to find amore stable configuration.Pick a random column i.Compare h(i) and h(i+1).Particle is added onto whichever is lower. Ifthey are equal, add to column i or i+1 withequal probability. = 1/4ξ = 1/2hW~ t~t1/445Restricted Solid On Solid Model (RSOS)Neighbouring sites may not have a heightdifference greater than 1.Pick a random column i.Add a particle only ifh(i) h(i-1) and h(i) h(i+1).Otherwise pick a new column. = 1/3ξ = 1/2c46
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