The spin-one Duffin–Kemmer–Petiau equation in the presence of pseudo-harmonic oscillatory ring-shaped potential

The Duffin–Kemmer–Petiau equation (DKP) is studied in the presence of a pseudo-harmonic oscillatory ring-shaped potential in (1+3)-dimensional space–time for spin-one particles. The exact energy eigenvalues and the eigenfunctions are obtained using the Nikiforov–Uvarov method.