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arXiv 2007.08088math.AP
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具有陡势阱的Schrödinger-Poisson方程组的正解

Positive solutions for the Schrödinger-Poisson system with steep potential well

Miao Du

摘要:

本文考虑如下Schrödinger-Poisson系统\begin{equation*} \begin{cases} - Δu+λV(x)u+ μϕu=|u|^{p-2}u &\text{in $\mathbb{R}^3$},\cr -Δϕ=u^{2} &\text{in $\mathbb{R}^3$}, \end{cases} \end{equation*},其中$λ,\:μ>0$为实参数,$2<p<6$ .假设$V(x)$代表一个底部为$V^{-1}(0)$的势阱,系统在$4\leq p<6$的情况下得到了广泛的研究。与此相反,由于非局部项$ϕu$的存在,$2<p<4$的情况下没有解的存在性结果。借助于截断技巧和参数依赖紧性引理,我们首先证明了在$2<p<4$情形下,$λ$大的和$μ$小的正解的存在性.然后在$2<p\leq3$的情形下,得到了$λ$大解和$μ$大解的不存在性.最后,我们研究了正解$|x| \rightarrow \infty$的衰减率以及正解$λ\rightarrow \infty$和正解$μ\rightarrow 0$的渐近行为.

英文摘要:

In this paper, we consider the following Schrödinger-Poisson system \begin{equation*} \begin{cases} - Δu+λV(x)u+ μϕu=|u|^{p-2}u &\text{in $\mathbb{R}^3$},\cr -Δϕ=u^{2} &\text{in $\mathbb{R}^3$}, \end{cases} \end{equation*} where $λ,\:μ>0$ are real parameters and $2<p<6$. Suppose that $V(x)$ represents a potential well with the bottom $V^{-1}(0)$, the system has been widely studied in the case $4\leq p<6$. In contrast, no existence result of solutions is available for the case $2<p<4$ due to the presence of the nonlocal term $ϕu$. With the aid of the truncation technique and the parameter-dependent compactness lemma, we first prove the existence of positive solutions for $λ$ large and $μ$ small in the case $2<p<4$. Then we obtain the nonexistence of nontrivial solutions for $λ$ large and $μ$ large in the case $2<p\leq3$. Finally, we explore the decay rate of the positive solutions as $|x| \rightarrow \infty$ as well as their asymptotic behavior as $λ\rightarrow \infty$ and $μ\rightarrow 0$.

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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