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摘要
In this paper, we study the existence of infinitely many solutions for the following nonlinear Schrodinger-Poisson system @@@ {-Delta u + V(x)u + phi u = f(x,u) g(x,u), x is an element of R-3, @@@ -Delta phi = u(2), lim(vertical bar x vertical bar ->infinity) phi(x) = 0, @@@ where the potential V may be unbounded from below. Under some mild conditions on the nonlinear terms f and g, we obtain infinitely many solutions of this system. Recent results from the literature are generalized and significantly improved.
