标题： 轴子，光子和标准模型之外的物理学 显示英文标题

标题： Axions, Photons and Physics Beyond the Standard Model

摘要： 在本论文中，我们通过将非线性电磁效应与轴子物理耦合，重新评估了轴子电动力学的一些方面。 我们提出了一些动机，以说明在电磁部分的一般非线性扩展中，轴子与光子耦合的合理性。 本文的重点在于研究构成介电常数和磁导率张量的分析，其中轴子贡献引入了传播辐射的频率和波矢的依赖性。 此外，我们指出轴子质量以及轴子-光子耦合常数如何导致电磁波的色散行为，这与非线性扩展的情况形成对比，在非线性扩展中会出现仅依赖于传播方向相对于外部场的等效折射率。 轴子通过产生依赖于波长的折射率改变了这一情况。 我们将我们的结果应用于Born-Infeld电动力学的特殊情况，并表明当轴子耦合时，它会变得双折射。 我们还在分析中包含了通过Carroll-Field-Jackiw项体现的洛伦兹破坏现象，我们研究了该部分对色散关系的影响，从而对光学现象的影响。 显示英文摘要

摘要： In this thesis, we re-assess some aspects of axionic electrodynamics by coupling non-linear electromagnetic effects to axion physics. We present a number of motivations to justify the coupling of the axion to the photon in terms of a general non-linear extension of the electromagnetic sector. Our emphasis in the paper relies on the investigation of the constitutive permittivity and permeability tensors, for which the axion contribution introduces a dependence on the frequency and wave vector of the propagating radiation. Also, we point out how the axion mass and the axion-photon coupling constant contribute to a dispersive behavior of the electromagnetic waves, in contrast to what happens in the case of non-linear extensions, when effective refractive indices appear which depend only on the direction of the propagation with respect to the external fields. The axion changes this picture by yielding refractive indices with dependence on the wavelength. We apply our results to the special case of the Born-Infeld Electrodynamics and we show that it becomes birefringent whenever the axion is coupled. We also include in our analysis the Lorentz violation phenomenon through a Carroll-Field-Jackiw term, where we investigate the influence of this sector on the dispersion relations, and consequently, on the optical phenomena.