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arXiv 2107.08708math.AP
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$\R^4$中具有临界Sobolev指数的nonlinear elliptic方程组的正规正解

Positive normalized solutions to nonlinear elliptic systems in $\R^4$ with critical Sobolev exponent

Xiao Luo, Xiaolong Yang, Wenming Zou

摘要:

本文考虑了下列方程组:\begin{equation}\label{eqA0.1}\nonumber \begin{cases} -Δu+λ_1u=μ_1u^3+α_1|u|^{p-2}u+βv^2u\quad&\hbox{in}~\R^4,\\ -Δv+λ_2v=μ_2v^3+α_2|v|^{p-2}v+βu^2v\quad&\hbox{in}~\R^4,\\ \end{cases} \end{equation}在质量约束下正解的存在性和关于质量的渐近性态,其中$$\int_{\R^4}u^2=a_1^2\quad\text{and}\quad\int_{\R^4}v^2=a_2^2,$$是给定的,$μ_1,μ_2,β>0$ ; $α_1,α_2\in \R$,$p\!\in\! (2,4)$和$λ_1,λ_2\!\in\!\R$以Lagrange乘子的形式出现.首先,我们建立了排斥相互作用情况下的不存在结果,即,$α_i<0(i=1,2)$。然后转向$α_i>0 (i=1,2)$的情况下,如果$2<p<3$,我们表明,该问题允许一个基态和一个激发态,其特征分别由一个局部极小和山通过相应的能量泛函的临界点。此外,我们还给出了这两个解$(a_1,a_2)\to (0,0)$和$a_1\sim a_2$的精确渐近性态.这似乎是第一个贡献的多重性,以及同步质量崩溃行为的规范化解决方案与Sobolev临界指数的薛定谔系统。当$3\leq p<4$,我们证明了存在以及不存在($p=3$)结果的基态,其特征在于相应的能量泛函的约束山路临界点。此外,当两个分量的质量分别为零和聚集到一个上界(或无穷大)时,得到了基态的精确渐近行为。

英文摘要:

In this paper, we consider the existence and asymptotic behavior on mass of the positive solutions to the following system: \begin{equation}\label{eqA0.1}\nonumber \begin{cases} -Δu+λ_1u=μ_1u^3+α_1|u|^{p-2}u+βv^2u\quad&\hbox{in}~\R^4,\\ -Δv+λ_2v=μ_2v^3+α_2|v|^{p-2}v+βu^2v\quad&\hbox{in}~\R^4,\\ \end{cases} \end{equation} under the mass constraint $$\int_{\R^4}u^2=a_1^2\quad\text{and}\quad\int_{\R^4}v^2=a_2^2,$$ where $a_1,a_2$ are prescribed, $μ_1,μ_2,β>0$; $α_1,α_2\in \R$, $p\!\in\! (2,4)$ and $λ_1,λ_2\!\in\!\R$ appear as Lagrange multipliers. Firstly, we establish a non-existence result for the repulsive interaction case, i.e., $α_i<0(i=1,2)$. Then turning to the case of $α_i>0 (i=1,2)$, if $2<p<3$, we show that the problem admits a ground state and an excited state, which are characterized respectively by a local minimizer and a mountain-pass critical point of the corresponding energy functional. Moreover, we give a precise asymptotic behavior of these two solutions as $(a_1,a_2)\to (0,0)$ and $a_1\sim a_2$. This seems to be the first contribution regarding the multiplicity as well as the synchronized mass collapse behavior of the normalized solutions to Schrödinger systems with Sobolev critical exponent. When $3\leq p<4$, we prove an existence as well as non-existence ($p=3$) results of the ground states, which are characterized by constrained mountain-pass critical points of the corresponding energy functional. Furthermore, precise asymptotic behaviors of the ground states are obtained when the masses of whose two components vanish and cluster to a upper bound (or infinity), respectively.

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