On the slowness of phase boundary motion in one space dimension

On the slowness of phase boundary motion in one space dimension
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一维空间相界运动的缓慢性

DOI:
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发表时间:
1990
期刊:
影响因子:
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通讯作者:
R. Kohn
R. Kohn
中科院分区:
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文献类型:
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作者:
L. Bronsard;R. Kohn

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研究了方程ut − e2 u xx +u 3 −u=0,a<x<B,在Neumann边界条件或适当的Dirichlet边界条件下解的极限行为.该分析基于“能量方法”。我们假设初始数据具有«过渡层结构»,即,除近100个过渡点外,其余均为±1。我们证明,在e→0的极限下,解保持其过渡层结构,且过渡点的移动速度慢于e的任何幂次
We study the limiting behavior of the solution of u t −e 2 u xx +u 3 −u=0, a<x<b, with a Neumann boundary condition or an appropriate Dirichlet condition. The analysis is based on «energy methods». We assume that the initial data has a «transition layer structure», i.e., ue∼±1 except near finitely many transition points. We show that, in the limit as e→0, the solution maintains its transition layer structure, and the transition points move slower than any power of e