规范理论中的强磁场

Q4 Social Sciences

Revista Mexicana De Fisica E Pub Date : 2021-07-02 DOI:10.31349/revmexfise.18.020209

H. Rojas, Jorge Luis Acosta Ávalo

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引用次数: 0

摘要

本文在已有文献的基础上，从量子电动力学的角度讨论了强磁场作用下光子在介质中的传播问题。磁场对空间对称性的破坏决定了一组基本矢量和张量的存在，这些矢量和张量必须满足量子电动力学的规范和CPT不变性。讨论了电荷对称和非对称的情况。在第二种情况下，会产生法拉第效应。手性电流出现，与极化算子的伪矢量特征向量有关（由于外部磁场破坏了空间对称性），与所谓的轴向异常有关。路径积分和函数导数被广泛用于获得自能算子和顶点算子以及戴森方程。针对电弱相互作用的Weinberg-Salam模型，讨论了在标准模型中引入手性化学势的不足。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Strong magnetic fields in gauge theories

The problem of photon propagation in a medium in presence of a strong magnetic field in the frame of quantum electrodynamics is discussed in the present paper, based on previous literature in this area. The breaking of the spatial symmetry by the magnetic field determine the existence of a set of basic vectors and tensors which must satisfy the gauge and CPT invariance of quantum electrodynamics. The charge symmetric and non-symmetric cases are discussed. In the second case the Faraday effect is produced. A chiral current arises, associated to a pseudovector eigenvector ofthe polarization operator (due to the breaking of the spatial symmetry by the external magnetic field), related to the so-called axial anomaly. The path integrals and functional derivation are widely used to obtain the self-energy and vertex operators, and the Dyson equations. The inadequate introduction of a chiral chemical potential in the standard model is discussed for the Weinberg-Salam model for electroweak interactions.

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来源期刊

Revista Mexicana De Fisica E 社会科学-科学史与科学哲学

CiteScore

0.80

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Revista Mexicana de Física (Rev. Mex. Fis.) publishes original papers of interest to our readers from the physical science com unity. Language may be English or Spanish, however, given the nature of our readers, English is recommended. Articles are classified as follows: Research. Articles reporting original results in physical science. Instrumentation. Articles reporting original contributions on design and construction of scientific instruments. They should present new instruments and techniques oriented to physical science problems solutions. They must also report measurements performed with the described instrument. Reviews. Critical surveys of specific physical science topics in which recent published information is analyzed and discussed. They should be accessible to physics graduate students and non specialists, and provide valuable bibliography to the specialist. Comments. Short papers (four pages maximum) that assess critically papers by others authors previously published in the Revista Mexicana de Física. A comment should state clearly to which paper it refers.