Time Evolution of Spin Waves
统计力学
2009-10-31 v1 高能物理 - 理论
数学物理
math.MP
摘要
A rigorous derivation of macroscopic spin-wave equations is demonstrated. We introduce a macroscopic mean-field limit and derive the so-called Landau-Lifshitz equations for spin waves. We first discuss the ferromagnetic Heisenberg model at T=0 and finally extend our analysis to general spin hamiltonians for the same class of ferromagnetic ground states.
引用
@article{arxiv.cond-mat/9909146,
title = {Time Evolution of Spin Waves},
author = {M Moser and A Prets and W L Spitzer},
journal= {arXiv preprint arXiv:cond-mat/9909146},
year = {2009}
}
备注
4 pages, to appear in PRL