Multiple nontrivial solutions for a class of nonlinear Schrodinger equations with linear coupling

In this paper, we are concerned with the existence and multiplicity of nontrivial solutions of a class of nonlinear Schrodinger equations which arise from nonlinear optics. We prove that there are two families of semiclassical positive solutions, which concentrate on the minimal and maximum points of the associated potentials, respectively. We also investigate the relationship between the number of solutions and the topology of the set of the global minima of the potentials by the minimax theorem. The novelty is that it might be the first attempt to explore multiplicity and concentration of positive solutions for such kind of coupled Schrodinger equations.