DNA分子非线性局域激发的数值计算

计算物理 ›› 1997, Vol. 14 ›› Issue (S1): 687-689.

DNA分子非线性局域激发的数值计算

杨显俊, 王仲奇, 卓益忠

中国原子能科学研究院, 北京 102413

收稿日期:1997-02-24 出版日期:1997-12-25 发布日期:1997-12-25
基金资助:
国家自然科学基金理论物理专项资助项目

THE NUMERICAL RESULTS FOR THE NONLINEAR LOCALIZED EXCITATION IN DNA

Yang Xianjun, Wang Zhongqi, Zhuo Yizhong

China Institute of Atomic Energy, Beijing 102413

Received:1997-02-24 Online:1997-12-25 Published:1997-12-25

摘要/Abstract

摘要： 用一简化模型对DNA非线性局域激发的机制作了初步的研究,用五阶Runge-Kuta数值计算来模拟DNA分子中N个非线性耦合碱基对的大振幅运动。通过适当选取H量中各参数及步长,调节色散效应与非色散非线性效应的比份以利于动力学稳定,使结果能初步给出非线性局域激发的形成与稳定传播的物理图象。并能看出非线性效应对DNA分子的"呼吸"效应的重要影响。

关键词: 非线性局域激发, DNA分子, 龙格一库塔方法

Abstract: A simple model for DNA molecules is proposed.The dynamical mechanism of the nonlinear localized excitation is studied by Runge-Kutta method.The large amplitude motion is simulated for N coupling base pairs of DNA molecules.The physical picture of the nonlinear localized excitation and its stable propagation can be emerged by means of adopting suitable parameters of Hamiltonian and time stpe.The nonlinear interaction on the beather effect is also discussed.

Key words: Nonlinear localized excitation, DNA molecules, Runge-Kutta Method

中图分类号:

杨显俊, 王仲奇, 卓益忠. DNA分子非线性局域激发的数值计算[J]. 计算物理, 1997, 14(S1): 687-689.

Yang Xianjun, Wang Zhongqi, Zhuo Yizhong. THE NUMERICAL RESULTS FOR THE NONLINEAR LOCALIZED EXCITATION IN DNA[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 1997, 14(S1): 687-689.