论文标题
非线性量子电动力学，纵向光子状态和宇宙学距离
Non linear quantum electrodynamics, longitudinal photon state and cosmological distances
论文作者
论文摘要
在这项工作中，由于电磁波与外部磁场的相互作用，我研究了对麦克斯韦方程的非线性QED效应，而与电磁波传播的方向相对于任意方向。我表明，在外部磁场相对于电磁波传播方向具有纵向分量时，在磁化真空中产生了纵向光子态。相对于真空中电磁波的速度，横向和纵向光子状态的混合会导致组速度下降。在宇宙学的背景下，就宇宙磁场而言，任何形式的电磁辐射的组速度的下降将导致宇宙学的多个距离测量。这些距离措施中最大的影响是共同距离和光度距离。距离度量的绝对变化通常很大，但相对变化很小。
In this work, I study the non-linear QED effects to the Maxwell equations due to the interaction of the electromagnetic waves with an external magnetic field with arbitrary direction with respect to the direction of propagation of the electromagnetic waves. I show that in the case when the external magnetic field has a longitudinal component with respect to the electromagnetic wave direction of propagation, a longitudinal photon state is generated in a magnetized vacuum. The mixing of transverse and longitudinal photon states causes a decrease in the group velocity with respect to the velocity of electromagnetic waves in a vacuum. In a cosmological context, as far as a cosmic magnetic field is concerned, the decrease of the group velocity of any form of electromagnetic radiation would cause changes in several distance measures in cosmology. The most affected of these distance measures turn out to be the comoving distance and the luminosity distance. The absolute change in distance measures are usually large but the relative changes are very small.
