Loop Algorithms for Asymmetric Hamiltonians
强关联电子
2009-10-31 v2
摘要
Generalized rules for building and flipping clusters in the quantum Monte Carlo loop algorithm are presented for the XXZ-model in a uniform magnetic field along the Z-axis. As is demonstrated for the Heisenberg antiferromagnet it is possible from these rules to select a new algorithm which performs significantly better than the standard loop algorithm in strong magnetic fields at low temperatures.
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