%0 Journal Article
%T Dirac eigenvalues for a softcore Coulomb potential in d dimensions
%A Richard L. Hall
%A Petr Zorin
%J Physics
%D 2012
%I arXiv
%R 10.1088/1751-8113/45/11/115303
%X A single fermion is bound by a softcore central Coulomb potential V(r) = -v/(r^q + b^q)^(1/q), v>0, b>0, q \ge 1, in d>1 spatial dimensions. Envelope theory is used to construct analytic lower bounds for the discrete Dirac energy spectrum. The results are compared to accurate eigenvalues obtained numerically.
%U http://arxiv.org/abs/1202.1814v1