Shadow poles in coupled-channel problems calculated with the Berggren basis

作     者：R. M. Id Betan A. T. Kruppa T. Vertse 

作者机构：Physics Institute of Rosario (CONICET) Boulevard 27 de Febrero 210 bis S2000EZP Rosario Argentina Department of Physics and Chemistry FCEIA(UNR) Avenue Pellegrini 250 S2000BTP Rosario Argentina Institute for Nuclear Research Hungarian Academy of Sciences (ATOMKI) P.O. Box 51 H–4001 Debrecen Hungary Department of Applied Mathematics and Probability Theory University of Debrecen Faculty of Informatics P.O. Box 12 H–4010 Debrecen Hungary 

出 版 物：《Physical Review C》 (物理学评论C辑：核物理学)

年 卷 期：2018年第97卷第2期

页      面：024307-024307页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：National Council of Research, (PIP-625) Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET Országos Tudományos Kutatási Alapprogramok, OTKA, (K112962) 

主　　题：Models & methods for nuclear reactions Functional analytical methods Optical, coupled-channel & distorted wave models 

摘      要：Background: In coupled-channels 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.