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arXiv 1701.03232math.AP
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具有尺度不变阻尼和超Fujita指数的半线性wave equations的爆破

Blow-up for semilinear wave equations with the scale invariant damping and super-Fujita exponent

Ning-An Lai, Hiroyuki Takamura, Kyouhei Wakasa

摘要:

具有尺度不变阻尼的半线性波动方程在次Fujita指数下的爆破问题已经得到了很好的研究。然而,对于超Fujita指数,只有Wakasugi在2014年在非有效阻尼情况下得到的一个爆破结果。本文在两个方面推广了他的结果,证明了:(1)当指数较大时,Blow-up会发生,这与无阻尼半线性波动方程的临界数Strauss指数密切相关;(2)这种Blow-up结果在比已知的阻尼项中的非有效常数更宽的常数范围内成立.

英文摘要:

The blow-up for semilinear wave equations with the scale invariant damping has been well-studied for sub-Fujita exponent. However, for super-Fujita exponent, there is only one blow-up result which is obtained in 2014 by Wakasugi in the case of non-effective damping. In this paper we extend his result in two aspects by showing that: (I) the blow-up will happen for bigger exponent, which is closely related to the Strauss exponent, the critical number for non-damped semilinear wave equations; (II) such a blow-up result is established for a wider range of the constant than the known non-effective one in the damping term.

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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