| 具有外磁场的landau—lifshitz方程的一种RKMK解法 |
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| 引用本文： | 康永强,张素英.具有外磁场的landau—lifshitz方程的一种RKMK解法[J].山西大同大学学报（自然科学版）,2008,24(6):17-20. |
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| 作者姓名： | 康永强 张素英 |
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| 作者单位： | 1. 山西大同大学物理与电子科学学院,山西大同,037009
2. 山西大学理论物理研究所,山西太原,030006 |
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| 摘 要： | 介绍了具有外磁场的landau—lifshitz方程的一种RKMK（李群）解法，基本的思想是先把偏微分方程化成dY／dt=A（t，Y）Y的形式，然后应用这种方法．数值计算结果表明这种算法比经典的Runge—Kutta方法能更好的保持离散方程的平方守恒特性．
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| 关 键 词： | landau—lifshitz方程 RKMK方法 李群方法 |
RKMK Method of Solving Landau-Lifshitz Equation with Magnetic Field |
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| KANG Yong-qiang,ZHANG Su-ying.RKMK Method of Solving Landau-Lifshitz Equation with Magnetic Field[J].Journal of Shanxi Datong University(Natural Science Edition),2008,24(6):17-20. |
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| Authors: | KANG Yong-qiang ZHANG Su-ying |
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| Institution: | KANG Yong-qiang, ZHANG Su-ying (1. School of Physics and Electronic Science, Shanxi Datong University, Datong Shanxi, 037009; 2.Institute of Theory Physics, Shanxi University, Taiyuan Shanxi, 030006) |
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| Abstract: | This article introduces a kind of Lie group method to solve Landau-Lifshitz （LL） equation with magnetic field. The basic idea is to discretize the partial differential equation into dy/dt=A （t,y）y, then apply the Lie group method to it. Numerical experiment results show the Lie group method has more the square conserving property than the RK method. |
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| Keywords: | landau-lifshitz equation RKMK method lie group method |
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