三维海森堡反铁磁体中的临界温度及从量子到经典序参量涨落的转变
统计力学
2009-10-31 v1
摘要
我们展示了三维(3D)S=1/2海森堡反铁磁体的大规模量子蒙特卡洛模拟结果。自旋刚度和亚晶格磁化强度的有限尺寸标度给出了临界温度Tc/J = 0.946 ± 0.001。临界行为与经典3D海森堡普适类一致,正如预期。我们讨论了在连续Tc > 0相变处从量子力学到经典(热)序参量涨落转变的一般性质。
引用
@article{arxiv.cond-mat/9804234,
title = {Critical temperature and the transition from quantum to classical order parameter fluctuations in the three-dimensional Heisenberg antiferromagnet},
author = {A. W. Sandvik},
journal= {arXiv preprint arXiv:cond-mat/9804234},
year = {2009}
}
备注
5 pages, Revtex, 4 PostScript figures included