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arXiv 1803.07528math.APmath-phmath.FAmath.MP
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二维稳定Muskat问题在$H^{3/2}$中的整体适定性

Global well-posedness for the 2D stable Muskat problem in $H^{3/2}$

Diego Cordoba, Omar Lazar

摘要:

我们证明了一个唯一的强解的整体存在性结果,在$\dot H^{5/2} \cap \dot H^{3/2}$与小$\dot H^{3/2}$半规范的2D Muskat问题,因此允许接口有任意大的有限斜率和有限的能量(由于$L^{2}$最大值原理)。证明是基于使用一个新的配方的Muskat方程,涉及振荡项。然后,在齐次Besov空间中小心地使用插值不等式允许我们关闭{ \emph{a priori} }估计。

英文摘要:

We prove a global existence result of a unique strong solution in $\dot H^{5/2} \cap \dot H^{3/2}$ with small $\dot H^{3/2}$ semi-norm for the 2D Muskat problem, hence allowing the interface to have arbitrary large finite slopes and finite energy (thanks to the $L^{2}$ maximum principle). The proof is based on the use of a new formulation of the Muskat equation that involves oscillatory terms. Then, a careful use of interpolation inequalities in homogeneneous Besov spaces allows us to close the {\emph{a priori}} estimates.

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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