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arXiv 1709.00217math.AP
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部分禁闭非线性薛定谔系统驻波的存在性和轨道稳定性

Existence and orbital stability of standing waves to nonlinear Schrödinger system with partial confinement

Tianxiang Gou

摘要:

研究了在约束\begin{align*} \int_{\mathbb{R}^3}|u_1|^2 \, dx = a_1>0,\quad \int_{\mathbb{R}^3}|u_2|^2 \, dx = a_2>0, \end{align*}下的非线性薛定谔方程组:\begin{equation*} \left\{ \begin{aligned} -Δu_1 + (x_1^2+x_2^2)u_1&= λ_1 u_1 + μ_1 |u_1|^{p_1 -2}u_1 + βr_1|u_1|^{r_1-2}u_1|u_2|^{r_2}, \\ -Δu_2 + (x_1^2+x_2^2)u_2&= λ_2 u_2 + μ_2 |u_2|^{p_2 -2}u_2 +βr_2 |u_1|^{r_1}|u_2|^{r_2 -2}u_2, \end{aligned} \right. \end{equation*}的解的存在性,其中$μ_1, μ_2, β>0, 2 <p_1, p_2 < \frac{10}{3}$,$r_1, r_2>1, r_1 + r_2 < \frac{10}{3}$ .在该系统中,参数$λ_1, λ_2 \in \R$是未知的,并作为相关的拉格朗日乘子出现。我们的解决方案是实现作为全球最小的基本能源功能的约束。我们的目的是建立任何极小化序列的紧性,直到平移。作为一个副产品,我们得到的轨道稳定性的整体极小集。

英文摘要:

We are concerned with the existence of solutions to the following nonlinear Schrödinger system in $\mathbb{R}^3$: \begin{equation*} \left\{ \begin{aligned} -Δu_1 + (x_1^2+x_2^2)u_1&= λ_1 u_1 + μ_1 |u_1|^{p_1 -2}u_1 + βr_1|u_1|^{r_1-2}u_1|u_2|^{r_2}, \\ -Δu_2 + (x_1^2+x_2^2)u_2&= λ_2 u_2 + μ_2 |u_2|^{p_2 -2}u_2 +βr_2 |u_1|^{r_1}|u_2|^{r_2 -2}u_2, \end{aligned} \right. \end{equation*} under the constraint \begin{align*} \int_{\mathbb{R}^3}|u_1|^2 \, dx = a_1>0,\quad \int_{\mathbb{R}^3}|u_2|^2 \, dx = a_2>0, \end{align*} where $μ_1, μ_2, β>0, 2 <p_1, p_2 < \frac{10}{3}$, $r_1, r_2>1, r_1 + r_2 < \frac{10}{3}$. In the system, the parameters $λ_1, λ_2 \in \R$ are unknown and appear as the associated Lagrange multipliers. Our solutions are achieved as global minimizers of the underlying energy functional subject to the constraint. Our purpose is to establish the compactness of any minimizing sequence up to translations. As a by-product, we obtain the orbital stability of the set of global minimizers.

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