发表机构
Universidade Federal Rural do Rio de Janeiro（里约热内卢联邦农村大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文计算了洛伦兹对称性破缺背景下QED的单圈有效作用量，发现仅两个背景张量有贡献，并在弱场区涌现出三次和四次非线性电动力学组合。
AI 中文摘要
本文计算了在存在破坏洛伦兹对称性的背景矢量和张量情况下，量子电动力学（QED）的单圈有效作用量。我们强调，仅考虑了费米子扇区中通过狄拉克矩阵实现的洛伦兹对称性破缺，因为扩展QED其他扇区的相关研究已在近期论文中探讨。利用固有时间方法，我们证明某些背景矢量和张量在线性近似下对单圈有效作用量没有贡献。因此，对于这些张量的小分量，只有两个背景张量对单圈有效作用量有贡献，并且在弱场区域涌现出新的三次和四次非线性电动力学的组合。
英文摘要
The effective action at one-loop for the quantum electrodynamics (QED) in the presence of background vectors and tensors that break the Lorentz symmetry is calculated in this work. We highlight that just the Lorentz symmetry violation through the Dirac matrices in the fermionic sector is considered since investigations in others sectors of the extended QED has been explored in recent papers. Using the proper time method, we show that some background vectors and tensors do not contribute to the effective action at one-loop and in the linear approximation. Thereby, only two background tensors contribute to the effective action at one-loop for small components of these tensors, and that a new combination of cubic and quartic non-linear electrodynamics emerge in the weak field regime.
Comments7 pages, no figures, some corrections and new references
