Quantum Phase Transitions and the Extended Coupled Cluster Method
高能物理 - 唯象学
2009-10-31 v1
摘要
We discuss the application of an extended version of the coupled cluster method to systems exhibiting a quantum phase transition. We use the lattice O(4) non-linear sigma model in (1+1)- and (3+1)-dimensions as an example. We show how simple predictions get modified, leading to the absence of a phase transition in (1+1) dimensions, and strong indications for a phase transition in (3+1) dimensions.
引用
@article{arxiv.hep-ph/0008040,
title = {Quantum Phase Transitions and the Extended Coupled Cluster Method},
author = {N. E. Ligterink and N. R. Walet and R. F. Bishop},
journal= {arXiv preprint arXiv:hep-ph/0008040},
year = {2009}
}