An amplitude-phase approach to calculating Regge-pole positions and residues

Authors: Thylwe, K.-E., Sokolovski, D
Document Type: Article
Pubstate: Published
Journal: J. Phys A.
Volume: 38   5305-5313
Year: 2005


New amplitude-phase formulae for Regge-pole positions and residues are derived. The derivation makes use of certain invariants of the Ermakov–Lewis type. The formulas allow calculation to be made on the real r-axis, with an additional flexibility to optimize its numerical aspects.