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arXiv 2201.02105math.AP
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Ginzburg-Landau能量下具有动态边界反应扩散的渐近稳定性

Asymptotic stability for diffusion with dynamic boundary reaction from Ginzburg-Landau energy

Yuan Gao, Jean-Michel Roquejoffre

摘要:

位错动力学中的非平衡过程及其向亚稳态转变轮廓的弛豫对于理解材料中线缺陷引起的塑性变形是至关重要的。本文研究了二维标量位错模型的动力学问题,该模型由体扩散方程和界面上的动力学边界条件耦合而成,其中由于位错的存在,非凸失配势在界面上产生界面反应项.我们证明了这个体-界面耦合系统的动力学解将一致收敛到亚稳态跃迁轮廓,该亚稳态跃迁轮廓在远场具有双态和厚尾衰减率。这种全局稳定性的亚稳态模式是第一个结果,为体界面耦合动力学驱动的界面上的滑移面上的反应。

英文摘要:

The nonequilibrium process in dislocation dynamics and its relaxation to the metastable transition profile is crucial for understanding the plastic deformation caused by line defects in materials. In this paper, we consider the full dynamics of a scalar dislocation model in two dimensions described by the bulk diffusion equation coupled with dynamic boundary condition on the interface, where a nonconvex misfit potential, due to the presence of dislocation, yields an interfacial reaction term on the interface. We prove the dynamic solution to this bulk-interface coupled system will uniformly converge to the metastable transition profile, which has a bi-states with fat-tail decay rate at the far fields. This global stability for the metastable pattern is the first result for a bulk-interface coupled dynamics driven only by an interfacial reaction on the slip plane.

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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