Global existence and blowup of solutions to semilinear fractional reaction-diffusion equation with singular potential
Global existence and blowup of solutions to semilinear fractional reaction-diffusion equation with singular potential
复制标题
奇异势半线性分数式反应扩散方程解的全局存在性与爆炸
DOI:
10.1016/j.jmaa.2020.124548
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发表时间:
2021-01
期刊:
影响因子:
--
通讯作者:
Minghong Xie
中科院分区:
文献类型:
--
作者:
Zhong Tan;Minghong Xie
We consider the following semilinear fractional reaction-diffusion equation with singular potential {A s u=− u t| x| 2 s+| u| p− 2 u,(x, t)∈ Ω×(0,∞), u= 0,(x, t)∈(R N∖ Ω)×[0,∞), u (x, 0)= u 0, x∈ Ω. Here A s (0< s< 1) represents spectral fractional Laplacian operator, 2< p< 2 s⁎, 2 s⁎= 2 N N− 2 s is critical exponent of fractional Sobolev trace embedding inequality, N> 2 s, and Ω is bounded domain in R N with smooth boundary. We first prove that the solution exists globally under appropriate hypotheses. And due to the non-locality of fractional Laplacian operator, we use the Caffarelli-Silvestre extension method to convert the non-local problem into a variable local problem. Being based upon this, by means of potential well, we obtain decay estimate and long time asymptotic behavior of global solution, as well as blow-up behavior of local solution.
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