Acta mathematica scientia,Series A ›› 2023, Vol. 43 ›› Issue (2): 433-446.

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Existence and Multiplicity of Radial Solutions for Double Phase Problem on the Entire Space $\mathbb{R} ^N$

Ge Bin(),Yuan Wenshuo()   

  1. College of Mathematical Sciences, Harbin Engineering University, Harbin 150001
  • Received:2021-08-05 Revised:2022-04-25 Online:2023-04-26 Published:2023-04-17
  • Supported by:
    National Natural Science Foundation of China(11201095);Fundamental Research Funds for the Central Universities(3072022TS2402);Postdoctoral Research Startup Foundation of Heilongjiang(LBH-Q14044);Science Research Funds for Overseas Returned Chinese Scholars of Heilongjiang Province(LC201502)

Abstract: This study is concerned with the following double phase problem $\begin{array}{ll}-{\rm div}(|\nabla u|^{p-2}\nabla u+\mu(x)|\nabla u|^{q-2}\nabla u) +|u|^{p-2}u+\mu(x)|u|^{q-2}u =\lambda f(x,u),\;x\in \mathbb{R} ^N, &\\ \end{array} $ where 1 < p < q < N, $\frac{q}{p}\leq 1+\frac{\alpha}{N}$, $\lambda$ is a real parameter, $0\leq\mu\in C^{0,\alpha}(\mathbb{R} ^N)$ with $\alpha\in(0,1]$ and $f: \mathbb{R} ^N\times\mathbb{R} \rightarrow \mathbb{R} $ satisfies a Carathéodory condition. The aim is to determine the precise positive interval of $\lambda$ for which the problem admits at least one or two nontrivial radially symmetric solutions by applying abstract critical point results.

Key words: Double phase operator, Radially symmetric solutions, Critical point theorems, Variational methods

CLC Number: 

  • O175
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