2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/173192In the present article, we describe a method of introducing the harmonic potential into the Klein-Gordon equation, leading to genuine bound states. The eigenfunctions and eigenenergies are worked out explicitly.Latex, 9 Pages, 1 Table, Added ReferenceQuantum PhysicsOn the energy spectrum of the one-dimensional Klein-Gordon Oscillatortext