Density matrix for non-Markovian dissipative dynamics: A numerical method

被引：7
|
作者：
Leathers, AS
Micha, DA
机构：
[1] Univ Florida, Quantum Theory Project, Dept Chem, Gainesville, FL 32611 USA
[2] Univ Florida, Quantum Theory Project, Dept Phys, Gainesville, FL 32611 USA
来源：
CHEMICAL PHYSICS LETTERS | 2005年 / 415卷 / 1-3期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/j.cplett.2005.08.106
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A general numerical method is presented for the Liouville-von Neumann integro-differential equation of motion of a reduced density matrix p, for molecular systems which arise when delayed (non-Markovian) dissipative dynamics are considered. Our method is a fourth-order extended Runge-Kutta integration scheme, which can be generalized for use with matrices. The method is applied to a spin-boson model. A comparison is made with results in the limits of instantaneous dissipation and Markovian dissipation. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：46 / 50
页数：5
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