The Allen-Cahn action functional in higher dimensions

The Allen-Cahn action functional in higher dimensions
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更高维度的艾伦-卡恩作用泛函

DOI:
10.4171/ifb/179
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发表时间:
2007
影响因子:
1
通讯作者:
M. Roger
M. Roger
中科院分区:
数学4区
文献类型:
--
作者:
Luca Mugnai;M. Roger

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Allen - Cahn作用泛函与随机扰动Allen - Cahn方程中罕见事件的概率有关。正式计算表明,在锐界面极限下,作用函数减小。我们在二维和三维空间中证明了相应的下界。一个困难是扩散界面可能在极限下崩溃。因此,我们考虑了扩散表面积测度的极限,并在一类演化测度中引入了广义速度和广义约化泛函。
The Allen‐Cahn action functional is related to the probability of rare events in the stochastically perturbed Allen‐Cahn equation. Formal calculations suggest a reduced action functionalin the sharp interface limit. We prove the corresponding lower bound in two and three space dimensions. One difficulty is that diffuse interfaces may collapse in the limit. We therefore consider the limit of diffuse surface area measures and introduce a generalized velocity and generalized reduced action functional in a class of evolving measures.
DOI: --
发表时间: 2007
期刊: Indiana University Math. Journal 56
影响因子: --
作者:
Westdickenberg;Maria
通讯作者: Maria