arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0912.3553math.AP
收藏

具吸收项和不可积初值的非局部扩散方程的渐近性态。超临界事例

Asymptotic Behavior for a Nonlocal Diffusion Equation with Absorption and Nonintegrable Initial Data. the Supercritical Case

Joana Terra, Noemi Wolanski

摘要:

本文研究了一类具有吸收的非局部扩散方程的解随时间的渐近性态,该方程的模型为类幂反应$-u^p$,$p>1$和集合在$\R^N$中.我们考虑一个有界的,非负的初始数据$u_0$的行为就像一个负的权力在无穷大。即,$|x|^αu_0(x)\to A>0$作为$|x|\to\infty$与$0<α\le N$。我们证明,在超临界情况下,$p>1+2/α$,解决方案的行为渐近的热方程-与扩散系数$\a$有关的非局部操作-具有相同的初始数据。

英文摘要:

In this paper we study the asymptotic behavior as time goes to infinity of the solution to a nonlocal diffusion equation with absorption modeled by a powerlike reaction $-u^p$, $p>1$ and set in $\R^N$. We consider a bounded, nonnegative initial datum $u_0$ that behaves like a negative power at infinity. That is, $|x|^αu_0(x)\to A>0$ as $|x|\to\infty$ with $0<α\le N$. We prove that, in the supercritical case $p>1+2/α$, the solution behaves asymptotically as that of the heat equation --with diffusivity $\a$ related to the nonlocal operator-- with the same initial datum.

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。

↑