Authors: Manuel Del Pino Michał Kowalczyk Juncheng Wei
Publish Date: 2008/07/29
Volume: 190, Issue: 1, Pages: 141-187
Abstract
We consider the Allen–Cahn equation varepsilon2Delta u + 1u2u = 0 in a bounded smooth domain Ω in mathbbR2 under zero Neumann boundary conditions where varepsilon 0 is a small parameter Let Γ0 be a segment contained in Ω connecting orthogonally the boundary Under certain nondegeneracy and nonminimality assumptions for Γ0 satisfied for instance by the short axis in an ellipse we construct for any given N ≥ 1 a solution exhibiting N transition layers whose mutual distances are Ovarepsilonlogvarepsilon and which collapse onto Γ0 as varepsilonto 0 Asymptotic location of these interfaces is governed by a Todatype system and yields in the limit broken lines with an angle at a common height and at main order cutting orthogonally the boundary
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