Perturbed Coulomb potentials in the Klein-Gordon equation via the shifted-1 expansion technique

Details Perturbed Coulomb potentials in the Klein-Gordon equation via the shifted-1 expansion technique Perturbed Coulomb potentials in the Klein-Gordon equation via the shifted-1 expansion technique

1999-10-19

arxiv.org/abs/math-ph/9910028v1

J. Phys. A 31 (1998) 3469

Physics

Mathematical Physics

20 pages, Latex file

Scientific paper

10.1088/0305-4470/31/15/012

A shifted - l expansion technique is introduced to calculate the energy eigenvalues for Klein-Gordon (KG) equation with Lorentz vector and/or Lorentz scalar potentials. Although it applies to any spherically symmetric potential, those that include Coulomb-like terms are only considered. Exact eigenvalues for a Lorentz vector or a Lorentz scalar, and an equally mixed Lorentz vector and Lorenz scalar Coulombic potentials are reproduced. Highly accurate and rapidly converging ground-state energies for Lorentz vector Coulomb with a Lorentz scalar linear potential, V(r)=-A1/r+kr, and S(r)=kr, respectively, are obtained. Moreover, a simple straightforward closed-form solution for a KG-particle in a Coulombic Lorentz vector and Lorentz scalar potentials is presented in appendix A.

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