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arXiv 1906.04471math.AP
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具有摩擦和粘弹性阻尼的半线性$σ$ -发展方程的研究

Study of semi-linear $σ$-evolution equations with frictional and visco-elastic damping

Hironori Michihisa, Tuan Anh Dao

摘要:

本文研究了具有摩擦阻尼和粘弹性阻尼的半线性$σ$ -发展方程,其中包含了任意$σ\ge 1$ .我们不仅研究解的高阶渐近展开,而且在$L^p-L^q$框架下,用$1\le p\le q\le \infty$研究相应的线性方程的扩散现象.通过假设初始数据具有额外的$L^{m}$正则性,利用$m\in [1,2)$,我们证明了小数据能量解的整体(在时间上)存在性,并指出了半线性方程的整体解的大时间行为.此外,我们还确定了所谓的临界指数时,$σ$是整数。

英文摘要:

In this article, we study semi-linear $σ$-evolution equations with double damping including frictional and visco-elastic damping for any $σ\ge 1$. We are interested in investigating not only higher order asymptotic expansions of solutions but also diffusion phenomenon in the $L^p-L^q$ framework, with $1\le p\le q\le \infty$, to the corresponding linear equations. By assuming additional $L^{m}$ regularity on the initial data, with $m\in [1,2)$, we prove the global (in time) existence of small data energy solutions and indicate the large time behavior of the global obtained solutions as well to semi-linear equations. Moreover, we also determine the so-called critical exponent when $σ$ is integers.

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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