Exact method for locating potential resonances and Regge trajectories

Details Exact method for locating potential resonances and Regge trajectories Exact method for locating potential resonances and Regge trajectories

1996-07-16

arxiv.org/abs/nucl-th/9607028v1

J.Phys.A30:3725-3738,1997

Physics

Nuclear Physics

Nuclear Theory

RevTeX, 19 pages, 3 figures, submitted to J.Phys.A

Scientific paper

10.1088/0305-4470/30/10/041

We propose an exact method for locating the zeros of the Jost function for analytic potentials in the complex momentum--plane. We further extend the method to the complex angular--momentum plane to provide the Regge trajectories. It is shown, by using several examples, that highly accurate results for extremely wide as well as for extremely narrow resonances with or without the presence of the Coulomb interaction can be obtained.

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