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Solutions of the spatially-dependent mass Dirac equation with the spin and pseudospin symmetry for the Coulomb-like potential
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Date
2010-03-15
Author
IKHDAİR, SAMEER
Sever, Ramazan
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We study the effect of spatially-dependent mass function over the solution of the Dirac equation with the Coulomb potential in the (3 + 1)-dimensions for any arbitrary spin-orbit kappa state. In the framework of the spin and pseudospin symmetry concept, the analytic bound state energy eigenvalues and the corresponding upper and lower two-component spinors of the two Dirac particles are obtained by means of the Nikiforov-Uvarov method, in closed form. This physical choice of the mass function leads to an exact analytical solution for the pseudospin part of the Dirac equation. The special cases kappa = +/- 1(l = (l) over bar = 0; i.e., s-wave), the constant mass and the non-relativistic limits are briefly investigated.
Subject Keywords
Nikiforov-Uvarov method
,
Spatially-dependent mass
,
Coulomb potential
,
Bound states
,
Pseudospin symmetry
,
Dirac equation
,
Spin symmetry
URI
https://hdl.handle.net/11511/62615
Journal
APPLIED MATHEMATICS AND COMPUTATION
DOI
https://doi.org/10.1016/j.amc.2010.01.072
Collections
Department of Physics, Article