Semiclassical approach to Regge poles trajectories calculations for nonsingular potentials: Thomas–Fermi type

A simple semiclassical approach, based on the investigation of anti-Stokes line topology, is presented for calculating Regge poles for nonsingular (Thomas?Fermi type) potentials, namely potentials with singularities at the origin weaker than order ?2. The anti-Stokes lines for Thomas?Fermi potentials have a more complicated structure than those of singular potentials and require careful application of complex analysis. The explicit solution of the Bohr?Sommerfeld quantization condition is used to obtain approximate Regge poles. We introduce and employ three hypotheses to obtain several terms of the Regge pole approximation.Please note that the pdf of this article was replaced with a corrected version on 29 June 2004. Minor changes have been made to pages 6950?6953.