标题： 洛伦兹不变材料和超材料 显示英文标题

标题： Lorentz invariant materials and metamaterials

摘要： 我们证明，由标量介电常数$\varepsilon$和磁导率$\mu$定义的材料的电磁本构关系，当满足$\varepsilon\mu = 1$时，对所有惯性观察者都是相同的。 为了突出我们一般结果的实际威力，我们讨论了这种性质起重要作用的方案，例如弗朗霍夫耳-菲佐光学拖拽或运动电介质的修改后的斯涅尔定律。 我们还证明，这种特殊行为可以扩展到如单轴各向异性介质或负折射率超材料等系统。 显示英文摘要

摘要： We show that electromagnetic constitutive relations of materials, defined by a scalar permittivity, $\varepsilon$, and permeability, $\mu$, are the same for all inertial observers provided that $\varepsilon\mu = 1$ is satisfied. To highlight the practical power of our general result, we discuss schemes in which this property plays a significant role, such as Fresnel-Fizeau optical drag or modified Snell's law for moving dielectrics. We also proof that such a particular behavior can be extended to systems like uniaxial anisotropic media or negative refractive index metamaterials.