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arXiv 0901.4359math.APmath-phmath.MP
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任意维次二次增长反应扩散方程组解的整体正则性

Global regularity of solutions to systems of reaction-diffusion with Sub-Quadratic Growth in any dimension

M. Cristina Caputo, Alexis Vasseur

摘要:

本文研究了一类反应项具有次二次增长的反应扩散方程组解的正则性。在没有小性假设的情况下,我们证明了在任意维数$N$上解的全局有界性和正则性。证明是基于爆破技术。系统的自然熵在分析中起着至关重要的作用。它使我们能够使用De Giorgi型方法介绍了粗糙系数的椭圆正则性。尽管这些系统是熵超临界的,但在临界标度下,通过很弱的范数来控制假设的爆破是可能的。与Navier-斯托克斯方程的类比在引言中简要讨论。

英文摘要:

This paper is devoted to the study of the regularity of solutions to some systems of reaction--diffusion equations, with reaction terms having a subquadratic growth. We show the global boundedness and regularity of solutions, without smallness assumptions, in any dimension $N$. The proof is based on blow-up techniques. The natural entropy of the system plays a crucial role in the analysis. It allows us to use of De Giorgi type methods introduced for elliptic regularity with rough coefficients. In spite these systems are entropy supercritical, it is possible to control the hypothetical blow-ups, in the critical scaling, via a very weak norm. Analogies with the Navier-Stokes equation are briefly discussed in the introduction.

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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