Dirac Equation Pseudospin Symmetry Spin Symmetry Symmetry Limit Dirac equation Schrödinger equation Tensor Interaction Centrifugal Term Energy Eigenvalue Nikiforov–Uvarov method Schrodinger Equation partition function pseudospin symmetry spin symmetry Approximate Analytical Solution Asymptotic Iteration Method Asymptotic iteration method Bound State Solution Bound states Bound states and vibrational partition function Coulomb-like Diatomic hydrides Dirac Oscillator Dirac Spinor Eigenfunctions Energy eigenvalues Euler MacLaurin formula Generalized Mobius square potential Gordon Equation Hellmann–Feynman potential