Amplitude-phase calculations of Regge poles obtained from coupled radial Dirac equations

Authors: Thylwe, K.-E., McCabe, P.
Document Type: Article
Pubstate: Published
Journal: J. Phys. A: Math. Theor.
Volume: 44   275305
Year: 2011


A recently developed amplitude-phase method for spinor-wave solutions is applied to the calculations of Regge pole positions and residues of Dirac particles. At a given energy the Dirac spin causes two sets of Regge poles that tend to coalesce in the non-relativistic limit. For the particular case of equal Lorentz-type vector and scalar potentials there is only one pole string, located very close to the non-relativistic pole string.