Shadow poles in coupled-channel problems calculated with the Berggren basis
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DOI: 10.1103/physrevc.97.024307
Abstract: In coupled-channel models the poles of the scattering S-matrix are located on different Riemann sheets. Physical observables are affected mainly by poles closest to the physical region but sometimes shadow poles have considerable effect, too.… read more here.
Keywords: berggren basis; channel; shadow poles; poles matrix ... See more keywords