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arXiv 1406.4733math.APmath.OC
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各向异性Cahn-Hilliard泛函的二阶渐近展开

Second Order Asymptotic Development for the Anisotropic Cahn-Hilliard Functional

Gianni Dal Maso, Irene Fonseca, Giovanni Leoni

摘要:

研究了具有指定质量和Dirichlet边界条件的各向异性Cahn-Hilliard泛函在决定过渡层宽度的参数λ趋于零时的渐近行为.假设双阱势为偶数,且等于|s-1| ^b接近s=1,其中1<b<2。一阶项的渐近发展的伽玛收敛是众所周知的,并涉及到一个合适的各向异性的界面周长。在这里,它表明,在这些假设下,二阶项为零,这给出了最小值的收敛速率的估计。

英文摘要:

The asymptotic behavior of an anisotropic Cahn-Hilliard functional with prescribed mass and Dirichlet boundary condition is studied when the parameter epsilon that determines the width of the transition layers tends to zero. The double-well potential is assumed to be even and equal to |s-1|^b near s=1, with 1<b<2. The first order term in the asymptotic development by Gamma-convergence is well-known, and is related to a suitable anisotropic perimeter of the interface. Here it is shown that, under these assumptions, the second order term is zero, which gives an estimate on the rate of convergence of the minimum values.

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