NEAR-THRESHOLD EXCITATION OF CONTINUUM RESONANCES

被引：38
|
作者：
PIRAUX, B
BHATT, R
KNIGHT, PL
机构：
[1] UNIV OXFORD, CLARENDON LAB, OXFORD OX1 3PU, ENGLAND
[2] UNIV OXFORD WOLFSON COLL, OXFORD OX2 6UD, ENGLAND
来源：
PHYSICAL REVIEW A | 1990年 / 41卷 / 11期
关键词：
D O I：
10.1103/PhysRevA.41.6296
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We examine the excitation of continuum-state resonances close to the threshold, paying particular attention to the breakdown of the Markov approximation and the consequences of this for initial-state time dependences and final-state spectra. Several theoretical dressed-state alternative descriptions are analyzed and compared: the nonperturbative coupling of a discrete state to a structured continuum with a threshold, the complete Fano diagonalization of the interacting system, and finally a partial diagonalization of the bound-state couplings to reveal the origin of dressed-state stabilization and partial decay suppression observed in this model. © 1990 The American Physical Society.
引用
收藏
页码：6296 / 6312
页数：17
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