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arXiv 1610.04413hep-thcond-mat.other
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关于Anomaly诱导运输的注意事项

Notes on Anomaly Induced Transport

Karl Landsteiner

摘要:

手征异常引起无耗散输运现象,如手征磁效应和涡旋效应。在这些笔记中,我从量子场论、流体力学和全息的角度回顾了这个理论。一个物理解释,否则有点模糊的概念一致的和协变异常将给出。CME在严格平衡中的消失将与正则化所施加的动量空间中的边界条件有关。重力异常的作用将被解释。通过全息术可以最容易地理解它在导数展开中以出乎意料的低阶对输运的贡献。反常输运被认为在理解先进材料(狄拉克和外尔(半)金属)的电子学方面也起着关键作用。通过反常输运可以理解与反常相关的现象,如负磁阻、反常霍尔效应、热反常霍尔效应和费米弧。最后,我简要地回顾了Weyl半金属的全息模型,它允许推断一个新的现象有关的引力异常:奇粘度的存在。

英文摘要:

Chiral anomalies give rise to dissipationless transport phenomena such as the chiral magnetic and vortical effects. In these notes I review the theory from a quantum field theoretic, hydrodynamic and holographic perspective. A physical interpretation of the otherwise somewhat obscure concepts of consistent and covariant anomalies will be given. Vanishing of the CME in strict equilibrium will be connected to the boundary conditions in momentum space imposed by the regularization. The role of the gravitational anomaly will be explained. That it contributes to transport in an unexpectedly low order in the derivative expansion can be easiest understood via holography. Anomalous transport is supposed to play also a key role in understanding the electronics of advanced materials, the Dirac- and Weyl (semi)metals. Anomaly related phenomena such as negative magnetoresistivity, anomalous Hall effect, thermal anomalous Hall effect and Fermi arcs can be understood via anomalous transport. Finally I briefly review a holographic model of Weyl semimetal which allows to infer a new phenomenon related to the gravitational anomaly: the presence of odd viscosity.

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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