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arXiv 1703.04099math.APmath.PR
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具动态边界条件的奇异随机Allen-Cahn方程

Singular Stochastic Allen-Cahn equations with dynamic boundary conditions

Carlo Orrieri, Luca Scarpa

摘要:

本文证明了有界区域上随机Allen-Cahn型方程在一般边界条件下的适定性。边界处的(非线性)通量旨在描述与硬壁的相互作用,并受到最近一些物理学文献的启发。漂移部分的奇异性允许一大类极大单调算子,推广了通常的双阱势。本文的主要新颖之处之一是没有任何增长条件的漂移项的演变,无论是在域上,也不是在边界上。利用先验估计以及单调性和紧性技巧,给出了系统变分解的适定性结果。一个消失的粘性参数的动态边界上也提出了。

英文摘要:

We prove a well-posedness result for stochastic Allen-Cahn type equations in a bounded domain coupled with generic boundary conditions. The (nonlinear) flux at the boundary aims at describing the interactions with the hard walls and is motivated by some recent literature in physics. The singular character of the drift part allows for a large class of maximal monotone operators, generalizing the usual double-well potentials. One of the main novelties of the paper is the absence of any growth condition on the drift term of the evolution, neither on the domain nor on the boundary. A well-posedness result for variational solutions of the system is presented using a priori estimates as well as monotonicity and compactness techniques. A vanishing viscosity argument for the dynamic on the boundary is also presented.

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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