Antibound poles in cutoff Woods-Saxon and in Salamon-Vertse potentials

Abstract

The motion of l=0 antibound poles of the S-matrix with varying potential strength is calculated in a cutoff Woods-Saxon (WS) potential and in the Salamon-Vertse (SV) potential, which goes to zero smoothly at a finite distance. The pole position of the antibound states as well as of the resonances depend on the cutoff radius, especially for higher node numbers. The starting points (at potential zero) of the pole trajectories correlate well with the range of the potential. The normalized antibound radial wave functions on the imaginary k-axis below and above the coalescence point have been found to be real and imaginary, respectively.

References in corpus (2)

• Shell Model in the Complex Energy Plane
• Analysis of the unbound spectrum of ${}^{12}$Li

Cited by in corpus (5)

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• JOZSO, a renewed version of the computer code GAMOW for calculating broad neutron resonances in phenomenological nuclear potentials
• Shadow poles in a coupled-channel problem calculated with Berggren basis