NON-MARKOVIAN MASTER EQUATION FOR LINEAR AND NONLINEAR-SYSTEMS

被引:27
作者
GANGOPADHYAY, G
RAY, DS
机构
[1] Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur
来源
PHYSICAL REVIEW A | 1992年 / 46卷 / 03期
关键词
D O I
10.1103/PhysRevA.46.1507
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Based on the standard system-heat-bath model, we have formulated a theory of the non-Markovian master equation for linear and nonlinear systems for a correlation time that is short but finite. We have applied the theory to linear systems, such as harmonic oscillators and two-level atoms and calculated the band-shape functions for transient optical absorption in the pump-probe experiments. The significant interplay of nonlinearity and non-Markovian decay has been illustrated by another application of the theory to a Morse oscillator. The theory is valid for arbitrary nonlinearity and finite temperatures but within the weak-coupling limit and has been derived without ad hoc implementation of a phenomenological memory function.
引用
收藏
页码:1507 / 1515
页数:9
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