Pseudospin and Spin Symmetric Solutions of Dirac Equation: Hellmann   Potential, Wei Hua Potential, Varshni Potential
  Approximate analytical solutions of the Dirac equation are obtained for the Hellmann potential, Wei Hua potential and Varshni potential with any $\kappa$-value for the cases having the Dirac equation pseudospin and spin symmetries. Closed forms of the energy eigenvalue equations and the spinor wave functions are obtained by using the Nikiforov-Uvarov method and some tables are given to see the dependence of the energy eigenvalues on different quantum number pairs ($n, \kappa$). 
Altug Arda, Ramazan Sever
math-ph math.MP quant-ph