Generalized Choquard equation with potential vanishing at infinity

Abstract

In this paper we investigate the existence of solution for the following generalized Choquard equation βˆ’Ξ”Ξ¦u+V(x)Ο•(∣u∣)u=(∫RNK(y)F(u(y))∣xβˆ’y∣λdy)K(x)f(u(x)),β€…β€Šβ€…β€Šx∈RN-\Delta_{\Phi}u+V(x)\phi(|u|)u=\left(\int_{\mathbb{R}^{N}} \dfrac{K(y)F(u(y))}{|x-y|^{\lambda}}dy\right)K(x)f(u(x)), \;\;x\in \mathbb{R}^{N} where Nβ‰₯3N\geq 3, Ξ»>0\lambda>0 is a positive parameter, V,K∈C(RN,[0,∞))V,K\in C(\mathbb R^N,[0,\infty)) are nonnegative functions that may vanish at infinity, the function f∈C(R,R)f\in C(\mathbb{R}, \mathbb R) is quasicritical and F(t)=∫0tf(s)dsF(t)=\int_{0}^{t}f(s)ds. This work incorporates the reflexive and non-reflexive cases taking into account from Orlicz-Sobolev framework. The non-reflexive case occurs when the NN-function Ξ¦~\tilde{\Phi} does not verify the Ξ”2\Delta_{2}-condition. In order to prove our main results we employ variational methods and regularity results

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