Nodal bound states with clustered spikes for Nonlinear Schrödinger equations

We consider the following nonlinear Schrödinger equations -ɛ2Δu+u=Q(x)|u|p-2u  in ℝN,u∈H1(ℝN),-ɛ2Δu+u=Q(x)|u|p-2u  in ℝN,u∈H1(ℝN),where ɛ is a small positive parameter, N≥2,  2