Quantum Phase Transitions in Spin Systems
强关联电子
2017-08-24 v1
摘要
We discuss the influence of strong quantum fluctuations on zero-temperature phase transitions in a two-dimensional spin-half Heisenberg system. Using a high-order coupled cluster treatment, we study competition of magnetic bonds with and without frustration. We find that the coupled cluster treatment is able to describe the zero-temperature transitions in a qualitatively correct way, even if frustration is present and other methods such as quantum Monte Carlo fail.
引用
@article{arxiv.cond-mat/0105517,
title = {Quantum Phase Transitions in Spin Systems},
author = {J. Richter and S. E. Krüger and D. J. J. Farnell and R. F. Bishop},
journal= {arXiv preprint arXiv:cond-mat/0105517},
year = {2017}
}
备注
8 pages, 12 Postscipt figures; Accepted for publication in World Scientific