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arXiv 1409.0364math.AP
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具有模拟肿瘤生长的质量源的非自治 Cahn-Hilliard-Darcy 系统的适定性与长时间行为

Well-posedness and long-time behavior of a non-autonomous Cahn-Hilliard-Darcy system with mass source modeling tumor growth

Jie Jiang, Hao Wu, Songmu Zheng

AI总结:

本文研究了带非自治质量源的 Cahn-Hilliard-Darcy 肿瘤生长模型的初边值问题,证明了 2D 和 3D 中弱解与强解的适定性,并分析了 2D 下解的全局存在性、极小拉回吸引子的存在性及渐近自治时的稳态收敛性。

摘要:

本文研究带有模拟肿瘤生长的非自治质量源项 $S$ 的 Cahn-Hilliard-Darcy 系统的初边值问题。我们首先证明了在 2D 和 3D 中全局弱解的存在性以及唯一局部强解的存在性。然后详细研究了空间维数为 2 时解的定性行为。更准确地说,我们证明了强解全局存在并定义了一个闭动力学过程。接着,对于平移有界的质量源 $S$,我们建立了极小拉回吸引子的存在性。最后,当假设 $S$ 是渐近自治的时,我们证明了任何全局弱解/强解在 $t\to+\infty$ 时收敛于单个稳态,并给出了收敛速率的估计。

英文摘要:

In this paper, we study an initial boundary value problem of the Cahn-Hilliard-Darcy system with a non-autonomous mass source term $S$ that models tumor growth. We first prove the existence of global weak solutions as well as the existence of unique local strong solutions in both 2D and 3D. Then we investigate the qualitative behavior of solutions in details when the spatial dimension is two. More precisely, we prove that the strong solution exists globally and it defines a closed dynamical process. Then we establish the existence of a minimal pullback attractor for translated bounded mass source $S$. Finally, when $S$ is assumed to be asymptotically autonomous, we demonstrate that any global weak/strong solution converges to a single steady state as $t\to+\infty$. An estimate on the convergence rate is also given.

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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