Existence and regularity of weak solutions to a model for coarsening in molecular beam epitaxy

Details Existence and regularity of weak solutions to a model for coarsening in molecular beam epitaxy Existence and regularity of weak solutions to a model for coarsening in molecular beam epitaxy

2011-02-04

arxiv.org/abs/1102.0937v1

Mathematics

Dynamical Systems

18 pages

Scientific paper

Taking into account the occurrence of a zero of the surface diffusion current and the requirement of the Ehrlich-Schwoebel effect, Siegert et al \cite{Siegert94} formulate a model of Langevin type that describes the growth of pyramidlike structures on a surface under conditions of molecular beam epitaxy, and that the slope of these pyramids is selected by the crystalline symmetries of the growing film. In this article, the existence and uniqueness of weak solution to an initial boundary value problem for this model is proved, in the case that the noise is neglected. The regularity of the weak solution to models, with/without slope selection, is also investigated.

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