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

页码：313 / 317

页数：5

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