电动力学中洛仑兹破坏的标志：光速的变化和光子质量
Signs of Lorentz violation in electrodynamics: variable speed of light and the photon mass
摘要：
基于经典迈克耳孙-莫雷实验和波迪-桑代克检验，在局部洛伦兹不变性（LLI）的背景下对时空各向异性的最新研究指出了v/c中的一阶项和与v无关的角签名的存在。结果显示，偶数和奇数阶项，并表明运动总是低估了时空平台。虽然LLI不能用精确的狭义相对论术语来恢复，但另一种选择看起来与具有可变光速模型和非零光子质量的广义相对论（GR）的关系方面兼容。这就提出了一个假设，即爱因斯坦等效原理，以及由此产生的LLI，是GR的基石，但不一定是SR的基本原理
英文摘要：
Recent studies of spacetime anisotropy in the context of local Lorentz invariance (LLI) based on classical Michelson-Morley experiments, as well Kennedy-Thorndyke tests, pointed out the existence of terms first order in v/c and of angular signatures independent of v. This contribution replaces the Lorentz symmetry by a velocity gauge transformation following an argument centred on observability. Results show even and odd order terms and indicate that motion is always underestimated in the spatiotemporal platform. Though LLI is not recovered in exact special relativistic terms, the alternative looks compatible with the relational aspects of general relativity (GR) with variable speed of light models as well a nonzero photon mass. This raises the hypothesis that Einstein equivalence principle, and consequently LLI, is a cornerstone of GR, but not necessarily a fundamental one of SR
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