Multiple positive solutions to critical p-Laplacian equations with vanishing potential
2021
This paper deals with the following p-Laplacian equation $$\begin{aligned} -\varepsilon ^{p}\Delta _{p}u+V(x)|u|^{p-2}u=|u|^{p^{*}-2}u,\quad u\in D^{1,p}({\mathbb {R}}^N), \end{aligned}$$
where $$p\in (1,N)$$
, p-Laplacian operator $$\Delta _{p}{:}{=}$$
div
$$(|\nabla u|^{p-2}\nabla u) $$
, $$p^{*}=Np/(N-p)$$
, $$\varepsilon $$
is a positive parameter, $$V(x)\in L^{{N}/{p}}({\mathbb {R}}^N)\cap L^{\infty }_{loc}({\mathbb {R}}^N)$$
and V(x) is assumed to be zero in some region of $${\mathbb {R}}^N$$
, which means it is of the vanishing potential case. In virtue of Ljusternik–Schnirelman theory of critical points, we succeed in proving the multiplicity of positive solutions. This result generalizes the result for semilinear Schrodinger equation by Chabrowski and Yang (Port. Math. 57 (2000), 273–284) to p-Laplacian equation.
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