NONSTATIONARY TIME-SERIES ANALYSIS OF MANY-BODY DYNAMICS

被引：11
|
作者：
MARTENS, CC
机构：
[1] Department of Chemistry, University of California, Irvine
来源：
PHYSICAL REVIEW A | 1992年 / 45卷 / 09期
关键词：
D O I：
10.1103/PhysRevA.45.6914
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A method for the analysis of computer simulations of ultrafast dynamical processes in many-body systems is presented, based on a joint time-frequency Wigner-Ville distribution calculated from the evolving particle velocities. This quantity has the interpretation of a time- and frequency-dependent effective temperature, and the evolution of the distribution allows dynamical information about energy flow between modes and relaxation mechanisms of many-body systems to be obtained. This approach is illustrated for the example of vibrational relaxation of an I2 impurity in an argon cluster.
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页码：6914 / 6917
页数：4
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