EFFICIENT DIRECT CALCULATION OF COMPLEX RESONANCE (SIEGERT) ENERGIES

被引:8
|
作者
JANG, HW [1 ]
LIGHT, JC [1 ]
机构
[1] UNIV CHICAGO, JAMES FRANCK INST, CHICAGO, IL 60637 USA
来源
PHYSICAL REVIEW A | 1995年 / 51卷 / 02期
关键词
D O I
10.1103/PhysRevA.51.1277
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
An improved version of the Siegert method to calculate resonance state parameters directly is presented. A prediagonalization of the Hamiltonian in a real L2 basis and an equation partitioning technique are utilized along with an inverse iteration method (combined with a rational fraction root search) to find accurate positions and widths of narrow resonances. Model calculations suggest that the present method is efficient and accurate especially for narrow resonances regardless of the potential range. © 1995 The American Physical Society.
引用
收藏
页码:1277 / 1285
页数:9
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