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arXiv 1808.01798math.AP
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具有自旋积累的Landau-Lifshitz方程的部分正则性

Partial regularity to the Landau-Lifshitz equation with spin accumulation

Xueke Pu, Wendong Wang

摘要:

在本文中,我们考虑一个模型的自旋磁化系统,考虑到扩散过程的自旋积累。该模型由描述磁化进动的Landau-Lifshitz方程和描述自旋累积扩散的准线性抛物方程组成。本文在大初值条件下证明了$\Bbb R^2$弱解的整体存在唯一性。此外,还显示出部分规律性。特别地,除了至多有限个奇点之外,该解在$\Bbb R^2\times(0,\infty)$上是正则的。

英文摘要:

In this paper, we consider a model for the spin-magnetization system that takes into account the diffusion process of the spin accumulation. This model consists of the Landau-Lifshitz equation describing the precession of the magnetization, coupled with a quasi-linear parabolic equation describing the diffusion of the spin accumulation. This paper establishes the global existence and uniqueness of weak solutions for large initial data in $\Bbb R^2$. Moreover, partial regularity is shown. In particular, the solution is regular on $\Bbb R^2\times(0,\infty)$ with the exception of at most finite singular points.

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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