带有双临界项的薛定谔-泊松系统非平凡解的存在性
Nontrivial Solution for Schrödinger-Poisson type Systems with Double Critical Terms
收稿日期: 2019-11-6
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Received: 2019-11-6
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作者简介 About authors
冯晓晶,E-mail:
The existence of a nontrivial solution to the Schrödinger-Poisson type system with both nonlinear critical growth and nonlocal critical growth is obtained by applying the concentration-compactness principle and mountain pass theorem. The double critical growth in the system presents an obstacle when showing the convergence of the bounded (PS) sequences. At the same time, it is difficult to estimate the critical level of the mountain pass. The key ingredient of the paper is to show that the critical level of the mountain pass is below the non-compactness level of the associated energy functional.
Keywords:
本文引用格式
冯晓晶.
Feng Xiaojing.
1 引言及主要结果
该文考虑如下具有双临界的非线性薛定谔-泊松系统
非平凡解的存在性, 其中
其中
另一类是具有非局部临界增长的Schrödinger-Poisson系统. Liu [15]研究了以下系统
并利用山路定理和集中紧性原理, 得到了系统(1.3)正解的存在性. Li, Li和Shi [16]考虑了另一个具有非局部临界增长的Schrödinger-Poisson系统
并利用变分方法证明了系统(1.4)正解的存在性.
受上述论文启发, 本文主要目的是研究具有非线性临界增长和非局部临界增长的系统(1.1)非平凡解的存在性.从目前技术的角度来看, 对临界指数情况的证明有两个困难.首先, 系统的临界增长对有界(PS)序列的收敛性造成一定的困难.其次, 由于该问题具有两个临界项, 所以很难估计出山路临界水平值.为了克服这些困难, 我们利用集中紧性原理和山路定理获得了系统(1.1)非平凡解的存在性.主要结果如下:
定理1.1 假设下列条件成立:
(
(
(
(
则系统(1.1)至少有一个非平凡解.
本文结构如下:在第二部分给出一些预备知识.第三部分证明定理1.1.
2 预备知识
在这一部分, 我们将给出一些符号和预备结果.记
为Sobolev空间
由Lax-Milgram定理, 对给定的
且有如下性质:
引理2.1[16] (ⅰ) 对任意的
(ⅱ) 对任意的
(ⅲ) 对任意的
其中
(ⅳ) 若
此外, 系统
的临界点.由条件(
下面两个引理说明
引理2.2 假设条件
证 对任意的
并且
对于
因此, 由Sobolev不等式, 可得
其中
因此, 固定
引理2.3 假设
证 根据引理2.1和
定义
故只要令
3 定理1.1的证明
这一部分致力于证明主要结果.由引理2.2、2.3, 我们知道泛函
其中
引理3.1 假设
若
并且
因而, 我们得到
进一步结合(3.3)式以及当
其次, 为了计算方便, 令
因此, 当
再次由(3.3)和(3.4)式, 可得
另一方面, 根据(2.3)和(3.4)式知道
引理3.2[9] 设
其中
下面几个引理可参见文献[9], 为了读者方便, 我们给出详细的证明过程.
引理3.3 令
证 由于
根据(3.5)式, 当
结合引理3.2以及(3.5)式, 可推出对于
引理3.3证毕.
引理3.4 若
证 当
由此可知
下面, 我们给出山路水平值
引理3.5 证明:
证 当
对任意的
因此, 存在
根据条件
对任意
取
结合引理3.3和(3.6)式, 当
进一步当
引理3.5证毕.
定理1.1的证明 由于泛函
注意到
根据引理2.1,
由
推得
即当
成立.进一步结合(3.10)式, 有
另一方面, 显然有
根据条件
由
再进一步结合(3.11)–(3.13)式, 可得
综上, 可得泛函
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