2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/93106An alternative approximation scheme has been used in solving the Schroedinger equation for the exponential-cosine-screened Coulomb potential. The bound state energies for various eigenstates and the corresponding wave functions are obtained analytically up to the second perturbation term.18 pagesQuantum Physicstext