Approximate bound state solutions of Dirac equation with Hulthen potential including Coulomb-like tensor potential

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IKHDAİR S., Sever R.

APPLIED MATHEMATICS AND COMPUTATION, vol.216, no.3, pp.911-923, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 216 Issue: 3
  • Publication Date: 2010
  • Doi Number: 10.1016/j.amc.2010.01.104
  • Journal Name: APPLIED MATHEMATICS AND COMPUTATION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.911-923
  • Keywords: Dirac equation, Spin and pseudospin symmetry, Bound states, Tensor potential, Hulthen potential, Nikiforov-Uvarov method, KLEIN-GORDON EQUATION, SCHRODINGER-EQUATION, PSEUDOSPIN, SPIN, VECTOR, SCALAR, OSCILLATOR, SYMMETRY, TERM
  • Middle East Technical University Affiliated: Yes

Abstract

We solve the Dirac equation approximately for the attractive scalar S(r) and repulsive vector V(r) Hulthen potentials including a Coulomb-like tensor potential with arbitrary spin-orbit coupling quantum number kappa. In the framework of the spin and pseudospin symmetric concept, we obtain the analytic energy spectrum and the corresponding two-component upper-and lower-spinors of the two Dirac particles by means of the Nikiforov-Uvarov method in closed form. The limit of zero tensor coupling and the non-relativistic solution are obtained. The energy spectrum for various levels is presented for several kappa values under the condition of exact spin symmetry in the presence or absence of tensor coupling. Crown Copyright (C) 2010 Published by Elsevier Inc. All rights reserved.