Abstract
The exact bound-state energy and the corresponding eigenfunctions of a relativistic spin 1/2 harmonic oscillator with a centripetal barrier, known as an isotonic oscillator including the tensor interaction term are obtained in D-dimensions. In particular, we use the Laplace transform method in the pseudospin symmetry limit. It is shown that our analytical results are consistent with those obtained by Agboola (2012 J. Math. Phys. 53 052302) and Ikhdair and Sever (2011 J. Math. Phys. 52 122108) in the absence of the tensor interaction using different methods. Further, we give some numerical results on the energy levels for different values of related quantum numbers.
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