Non-linear Stability of Double Bubbles under Surface Diffusion

Harald Garcke; Michael Gößwein

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arXiv · 1910.01041

Non-linear Stability of Double Bubbles under Surface Diffusion

Harald Garcke·Michael Gößwein

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Abstract

We consider the evolution of triple junction clusters driven by the surface diffusion flow. On the triple line we use the boundary conditions derived by Garcke and Novick-Cohen as the singular limit of a Cahn-Hilliard equation with degenerated mobility. These conditions are the concurrency of the triple junction, angle conditions between the hypersurfaces, continuity of the chemical potentials and a flux-balance. For this system we show stability of its energy minimizers, i.e., standard double bubbles.The main argument relies on a Lojasiewicz-Simon gradient inequality. The proof of it differs from others works due to the fully non-linear boundary conditions and problems with the (non-local) tangential part.

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Harald Garcke, Michael Gößwein. 2019-10-02. Non-linear Stability of Double Bubbles under Surface Diffusion. https://arxiv.org/abs/1910.01041

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