Homotopy perturbation method in quantum mechanical problems

We apply homotopy perturbation method (HPM) to study nonlinear quantum mechanical systems. It is shown that this technique can be used efficiently to deal with quantum mechanical bound state as well as the continuum state problems. To illustrate the capability and reliability of the method, few examples of bound state and scattering state problems are discussed. (C) 2012 Elsevier Inc. All rights reserved.