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arXiv 2005.09651math.AP
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完全非局部heat equation的大时间行为

Large-time behavior for a fully nonlocal heat equation

Carmen Cortázar, Fernando Quirós, Noemí Wolanski

摘要:

我们研究了非局部热方程解在$\mathbb{R}^N$中的所有$L^p$范数和不同时间尺度下的大时间行为,其中包含一个Caputo $α$ -时间导数和一个Laplacian $(-Δ)^s$的幂,$s\in (0,1)$,推广了作者最近对$s=1$的结果。假设初始数据是可积的,并且在需要时也在$L^p$中。主要的新颖性相对于情况$s=1$来自于行为在快速的尺度,其中,由于胖尾巴的基本解的方程,我们能够给出的结果是不可用的情况$s=1$,也不是,据我们所知,标准的热方程,$s=1$,$α=1$。

英文摘要:

We study the large-time behavior in all $L^p$ norms and in different space-time scales of solutions to a nonlocal heat equation in $\mathbb{R}^N$ involving a Caputo $α$-time derivative and a power of the Laplacian $(-Δ)^s$, $s\in (0,1)$, extending recent results by the authors for the case $s=1$. The initial data are assumed to be integrable, and, when required, to be also in $L^p$. The main novelty with respect to the case $s=1$ comes from the behaviour in fast scales, for which, thanks to the fat tails of the fundamental solution of the equation, we are able to give results that are not available neither for the case $s=1$ nor, to our knowledge, for the standard heat equation, $s=1$, $α=1$.

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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