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arXiv 1802.01385cond-mat.mes-hall
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手征反常、拓扑场论与物质的新态

Chiral Anomaly, Topological Field Theory, and Novel States of Matter

Juerg Froehlich

摘要:

本文提出的分析和手征异常的简要调查的动机的描述开始,我着手审查的量子霍尔效应在外部磁场中的二维不可压缩电子气体的理论的一些基本要素,(“霍尔绝缘体”)。我讨论的起源和作用的异常手性边缘电流和异常流入的二维绝缘体明确或自发打破时间反转,即,霍尔绝缘体和“陈式绝缘体”。拓扑陈-西蒙斯行动产生的大规模的响应方程的2D散装这样的物质状态显示。概述了具有阿贝尔辫统计的准粒子的霍尔绝缘体的分类。随后,描述了具有自旋-轨道相互作用的二维时反不变拓扑绝缘体中的手征边缘自旋电流,以及这种材料的体响应方程。下面是一个简短的3D拓扑绝缘体理论的题外话,包括“轴向绝缘体”。最后,一些开放的问题进行了描述,并在宇宙学中的一个问题有关的轴子绝缘体提到。就量子霍尔效应和自旋电流的时间反演不变的二维拓扑绝缘体而言,这篇评论是基于广泛的工作,我的合作者和我在90年代初进行的。

英文摘要:

Starting with a description of the motivation underlying the analysis presented in this paper and a brief survey of the chiral anomaly, I proceed to review some basic elements of the theory of the quantum Hall effect in 2D incompressible electron gases in an external magnetic field, ("Hall insulators"). I discuss the origin and role of anomalous chiral edge currents and of anomaly inflow in 2D insulators with explicitly or spontaneously broken time reversal, i.e., in Hall insulators and "Chern insulators". The topological Chern-Simons action yielding the large-scale response equations for the 2D bulk of such states of matter is displayed. A classification of Hall insulators featuring quasi-particles with abelian braid statistics is sketched. Subsequently, the chiral edge spin currents encountered in some time-reversal invariant 2D topological insulators with spin-orbit interactions and the bulk response equations of such materials are described. A short digression into the theory of 3D topological insulators, including "axionic insulators", follows next. To conclude, some open problems are described and a problem in cosmology related to axionic insulators is mentioned. As far as the quantum Hall effect and the spin currents in time-reversal invariant 2D topological insulators are concerned this review is based on extensive work my collaborators and I carried out in the early 1990's.

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。

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