Two approximations to the bound states of Dirac-Hulthen problem

Details Two approximations to the bound states of Dirac-Hulthen problem Two approximations to the bound states of Dirac-Hulthen problem

2011-10-05

arxiv.org/abs/1110.0940v2

J. Phys. A: Math. and Theor. 44 (2011) 355301

Physics

Quantum Physics

29 pages, 7 figures. arXiv admin note: text overlap with arXiv:hep-th/0503208

Scientific paper

10.1088/1751-8113/44/35/355301

The bound state (energy spectrum and two-spinor wave functions) solutions of the Dirac equation with the Hulthen potential for all angular momenta based on the spin and pseudospin symmetry are obtained. The parametric generalization of the Nikiforov-Uvarov method is used in the calculations. The orbital dependency (spin-orbit and pseudospin-orbit dependent coupling too singular 1/r^{2}) of the Dirac equation are included to the solution by introducing a more accurate approximation scheme to deal with the centrifugal (pseudo-centrifugal) term. The approximation is also made for the less singular 1/r orbital term in the Dirac equation for a wider energy spectrum. The nonrelativistic limits are also obtained on mapping of parameters.

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