Multiple solutions for a class of sublinear Schrödinger equations

In this paper, we study the existence of infinitely many nontrivial solutions for a class of sublinear Schrödinger equations −△u+V(x)u=f(x,u), where f(x,u)=μξ(x)|u|μ−2u with 1<μ<2 and ξ:RN→R being a positive continuous function.