Exceptional points in the scattering continuum

被引：22
|
作者：
Okolowicz, J. [1 ]
Ploszajczak, M. [2 ]
机构：
[1] Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland
[2] IN2P3, CNRS, DSM, CEA,GANIL, F-14076 Caen 05, France
来源：
PHYSICAL REVIEW C | 2009年 / 80卷 / 03期
关键词：
2 INTERACTING RESONANCES; SHELL-MODEL; LEVEL REPULSION; UNIFIED THEORY; SYSTEMS; STATES;
D O I：
10.1103/PhysRevC.80.034619
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The manifestation of exceptional points in the scattering continuum of an atomic nucleus is studied using the real-energy continuum shell model. It is shown that low-energy exceptional points appear for realistic values of coupling to the continuum and, hence, could be accessible experimentally. Experimental signatures are proposed which include the jump by 2 pi of the elastic scattering phase shift and a salient energy dependence of cross sections in the vicinity of the exceptional point.
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页数：7
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