2+1 维量子临界自旋液体与共形场论
强关联电子
2007-05-23 v4 无序系统与神经网络
高能物理 - 格点
高能物理 - 理论
摘要
我们描述了新的基于微扰费子的共形场论，这些场论可在 2 和 4 维之间外推。临界指数依赖于费子的分量数 N 和维数 D。在反亚磁性背景下，提出 N=2 理论可描述对应于 Neel 有序相与 VBS 类相之间过渡的去约束量子临界自旋液体。
引用
@article{arxiv.cond-mat/0610639,
title = {Quantum critical spin liquids and conformal field theory in 2+1 dimensions},
author = {André LeClair},
journal= {arXiv preprint arXiv:cond-mat/0610639},
year = {2007}
}
备注
21 pages, version 2: expanded discussion on possible applications to superconductivity, which shows a two-band theory with some BCS-like pairing interactions; a few references added, typos corrected, version 3: minor changes, version submitted for publication to JSTAT. version 4: For sake of clarity, this version focuses only on possible applications to deconfined quantum criticality; all the Ising model discussion is contained in cond-mat/0610817