非对称哈密顿量的圈算法
强关联电子
2009-10-31 v2
摘要
提出了在沿 Z 轴的均匀磁场中 XXZ 模型的量子蒙特卡洛圈算法里构建和翻转团簇的推广规则。如对于海森堡反铁磁体所演示的,可从这些规则中选出一种新算法,在低温强磁场下性能显著优于标准圈算法。
引用
@article{arxiv.cond-mat/9907142,
title = {Loop Algorithms for Asymmetric Hamiltonians},
author = {Olav F. Syljuasen},
journal= {arXiv preprint arXiv:cond-mat/9907142},
year = {2009}
}
备注
Replaced measurement of helicity modulus at H=2J with a measurement at H=3.95J + other small changes in the section on numerical results