arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.15012math.AP
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具有周期迁移率的Allen-Cahn方程的均匀化

Homogenization of the Allen-Cahn equation with periodic mobility

Peter S. Morfe

摘要:

分析了具有各向异性、空间周期性迁移率系数的Allen-Cahn方程的尖锐界面极限,证明了界面的大尺度行为是由具有有效迁移率的中曲率流决定的.形式上,这个结果是由Barles和Souganwald对具有周期系数的非线性反应扩散方程所发展的渐近性得出的。然而,我们表明,相应的细胞问题实际上是不适定的法线方向是合理的。为了规避这个问题,一些新的想法是必要的,无论是在建设介观子和超解控制大规模的行为接口和证明,在极限中获得的接口实际上是由有效方程描述。

英文摘要:

We analyze the sharp interface limit for the Allen-Cahn equation with an anisotropic, spatially periodic mobility coefficient and prove that the large-scale behavior of interfaces is determined by mean curvature flow with an effective mobility. Formally, the result follows from the asymptotics developed by Barles and Souganidis for bistable reaction-diffusion equations with periodic coefficients. However, we show that the corresponding cell problem is actually ill-posed when the normal direction is rational. To circumvent this issue, a number of new ideas are needed, both in the construction of mesoscopic sub- and supersolutions controlling the large-scale behavior of interfaces and in the proof that the interfaces obtained in the limit are actually described by the effective equation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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