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arXiv 2211.03389math.AP
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位势在某些发展方程L^{2}-估计中的作用

A role of potential on L^{2}-estimates for some evolution equations

Ryo Ikehata

摘要:

本文考虑了有阻尼和无阻尼波动方程的位势对解本身的L^{2}-估计的有效作用。在自由波方程的情况下,已知解本身的L^{2}-范数通常在一维和二维情况下增长到无穷大(随着时间的无穷大),然而,通过在相当宽松的条件下添加势,可以控制增长性质以获得L^{2}-界。这一思想同样适用于带势的阻尼波方程,在低维情况下得到了能量快和L^{2}衰减的结果,这些结果在长周期内是开放的。还可以研究热方程和板方程的应用。本文主要研究低维情形。

英文摘要:

In this papwe we consider an effective role of the potential of the wave equations with/without damping on the L^{2}-estimate of the solution itself. In the free wave equation case it is known that the L^{2}-norm of the solution itself generally grows to infinity (as time goes to infinity) in the one and two dimensional cases, however, by adding the potential with quite generous conditions one can controle the growth property to get the L^{2}-bounds. This idea can be also applied to the damped wave equations with potential in order to get fast energy and L^{2} decay results in the low dimensional case, which are open for a long period. Applications to heat and plate equations with a potential can be also studied. In this paper the low dimensional case is a main target.

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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