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arXiv 2102.13422math.AP
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一类具有一般非线性项的Kirchhoff型方程束缚态解的存在性和多解性

Existence and multiplicity of bound state solutions to a Kirchhoff type equation with a general nonlinearity

Zhisu Liu, Haijun Luo, Jianjun Zhang

摘要:

本文考虑了如下Kirchhoff型方程$$ -\left(a+ b\int_{\R^3}|\nabla u|^2\right)\triangle {u}+V(x)u=f(u),\,\,x\in\R^3, $$其中$a,b>0$和$f\in C(\R,\R)$,以及势$V\in C^1(\R^3,\R)$是正的,有界的,并满足适当的衰减假设.利用一种新的扰动方法和一个新的Kirchhoff型整体紧性引理,我们证明了上述具有一般非线性项的问题的束缚态解的存在性和多重性.特别指出,对于$f$,既不需要相应的Ambrosetti-Rabinowitz条件,也不需要任何单调性假设.此外,潜在的$V$可能不是径向对称的或矫顽的。作为原型,非线性项涉及$p\in (2, 6)$的幂型非线性$f(u) = |u|^{p-2}u$。特别地,我们的结果推广和改进了Li和Ye(J.微分方程,257(2014):566-600)的结果,在这个意义上,$p\in(2,3]$的情况在那里是开放的。

英文摘要:

In this paper, we consider the following Kirchhoff type equation $$ -\left(a+ b\int_{\R^3}|\nabla u|^2\right)\triangle {u}+V(x)u=f(u),\,\,x\in\R^3, $$ where $a,b>0$ and $f\in C(\R,\R)$, and the potential $V\in C^1(\R^3,\R)$ is positive, bounded and satisfies suitable decay assumptions. By using a new perturbation approach together with a new version of global compactness lemma of Kirchhoff type, we prove the existence and multiplicity of bound state solutions for the above problem with a general nonlinearity. We especially point out that neither the corresponding Ambrosetti-Rabinowitz condition nor any monotonicity assumption is required for $f$. Moreover, the potential $V$ may not be radially symmetry or coercive. As a prototype, the nonlinear term involves the power-type nonlinearity $f(u) = |u|^{p-2}u$ for $p\in (2, 6)$. In particular, our results generalize and improve the results by Li and Ye (J.Differential Equations, 257(2014): 566-600), in the sense that the case $p\in(2,3]$ is left open there.

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