论文标题

有效的电磁作用,用于违反轴向异常的理论

Effective electromagnetic actions for Lorentz violating theories exhibiting the axial anomaly

论文作者

Gómez, A., Martín-Ruiz, A., Urrutia, L. F.

论文摘要

使用热场理论方法计算出大量表现出Lorentz不变性违规(LIV)的大型费米子系统中的真空极化张量的有效电磁作用的CPT奇数贡献,该系统根据化学势依据,以校正为重点。所考虑的系统表现出轴向异常及其有效作用,由轴支电动力学描述,从而将所有LIV参数输入到未修饰的Pontryagin密度的耦合$θ(x)$中。简要介绍了对I型Weyl半法的初步应用。

The CPT odd contribution to the effective electromagnetic action deriving from the vacuum polarization tensor in a large class of fermionic systems exhibiting Lorentz invariance violation (LIV) is calculated using thermal field theory methods, focusing upon corrections depending on the chemical potential. The systems considered exhibit the axial anomaly and their effective actions are described by axion electrodynamics whereby all the LIV parameters enter in the coupling $Θ(x)$ to the unmodified Pontryagin density. A preliminary application to type-I tilted Weyl semimetals is briefly presented.

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