Effective-Mass Klein-Gordon-Yukawa Problem for Bound and Scattering   States
  Bound and scattering state solutions of the effective-mass Klein-Gordon equation are obtained for the Yukawa potential with any angular momentum $\ell$. Energy eigenvalues, normalized wave functions and scattering phase shifts are calculated as well as for the constant mass case. Bound state solutions of the Coulomb potential are also studied as a limiting case. Analytical and numerical results are compared with the ones obtained before. 
Altug Arda (Hacettepe University), Ramazan Sever (Middle East   Technical University)
math-ph math.MP