Correlation widths in quantum-chaotic scattering

被引：6
|
作者：
Dietz, B. [1 ]
Richter, A. [1 ,3 ]
Weidenmueller, H. A. [2 ]
机构：
[1] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany
[2] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany
[3] ECT, I-38123 Villazzano, Trento, Italy
来源：
PHYSICS LETTERS B | 2011年 / 697卷 / 04期
关键词：
Compound nucleus; Cross-section correlation function; Weisskopf estimate; COMPOUND-NUCLEUS SCATTERING; S-MATRIX; CROSS SECTIONS; FLUCTUATIONS; RESONANCES; CAVITIES; PHYSICS; STATISTICS; ABSORPTION; ELEMENTS;
D O I：
10.1016/j.physletb.2011.02.009
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
An important parameter to characterize the scattering matrix S for quantum-chaotic scattering is the width Gamma(corr) of the S-matrix autocorrelation function. We show that the "Weisskopf estimate" d/(2 pi) Sigma T-c(c) (where d is the mean resonance spacing, T-c with 0 <= T-c <= 1 the "transmission coefficient" in channel c and where the sum runs over all channels) provides a good approximation to Gamma(corr) even when the number of channels is small. That same conclusion applies also to the cross-section correlation function. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：313 / 317
页数：5
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