arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2104.13233cond-mat.str-elhep-th
收藏

玻色拓扑相位中的畴壁装饰、反常和谱序列

Domain Wall Decorations, Anomalies and Spectral Sequences in Bosonic Topological Phases

Qing-Rui Wang, Shang-Qiang Ning, Meng Cheng

摘要:

在这项工作中,我们研究了玻色子群上同调保序拓扑(SPT)相的装饰畴壁结构和玻色子拓扑相的量子反常。我们首先表明,一般的装饰畴壁建设可以在数学上描述为一个Atiyah-Hirzebruch光谱序列,其中的条款上的$E_2$页对应于装饰低维SPT状态在畴壁交界处。对于玻色子群上同调SPT相位,谱序列变成普通群上同调的Lyndon-Hochschild-Serre(LHS)谱序列。然后,我们讨论的物理解释的差异的频谱序列,特别是在异常的SPT阶段和丰富的规范理论的背景下。作为主要的技术结果,我们得到了完整的描述LHS谱序列具体在上链水平。然后应用显式公式解释了SPT相的Lieb-Schultz-Mattis定理,并导出了$π$磁通晶格中易平面自旋模型的一个新的LSM定理.我们也重新讨论了基于我们的结果的二维和三维阿贝尔规范理论的分类。

英文摘要:

In this work we investigate the decorated domain wall construction in bosonic group-cohomology symmetry-protected topological (SPT) phases and related quantum anomalies in bosonic topological phases. We first show that a general decorated domain wall construction can be described mathematically as an Atiyah-Hirzebruch spectral sequence, where the terms on the $E_2$ page correspond to decorations by lower-dimensional SPT states at domain wall junctions. For bosonic group-cohomology SPT phases, the spectral sequence becomes the Lyndon-Hochschild-Serre (LHS) spectral sequence for ordinary group cohomology. We then discuss the physical interpretations of the differentials in the spectral sequence, particularly in the context of anomalous SPT phases and symmetry-enriched gauge theories. As the main technical result, we obtain a full description of the LHS spectral sequence concretely at the cochain level. The explicit formulae are then applied to explain Lieb-Schultz-Mattis theorems for SPT phases, and also derive a new LSM theorem for easy-plane spin model in a $π$ flux lattice. We also revisit the classifications of symmetry-enriched 2D and 3D Abelian gauge theories using our results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑