标题： 磁介质中电磁场的量子化与外部电荷 显示英文标题

标题： Electromagnetic field quantization in a magnetodielectric with external charges

摘要： 电磁场在充满线性磁电介质并存在外部电荷的立方腔内部通过将磁电介质建模为两个独立的量子场进行量子化。 介质的电极化和磁极化密度是用介质的阶梯算符和腔的本征模式来定义的。 通过使用最小耦合方案，从海森堡方程中得到了介质的麦克斯韦方程和本构方程以及带电粒子的运动方程。 作为该模型的应用，计算了嵌入磁电介质中的二能级原子的自发辐射，其结果基于介质的电和磁极化率以及立方腔的格林函数。 显示英文摘要

摘要： The electromagnetic field inside a cubic cavity filled up with a linear magnetodielectric and in the presence of external charges is quantized by modelling the magnetodielectric with two independent quantum fields. Electric and magnetic polarization densities of the medium are defined in terms of the ladder operators of the medium and eigenmodes of the cavity. Maxwell and constitutive equations of the medium together with the equation of motion of the charged particles have been obtained from the Heisenberg equations using a minimal coupling scheme. Spontaneous emission of a two level atom embedded in a magnetodielectric is calculated in terms of electric and magnetic susceptibilities of the medium and the Green function of the cubic cavity as an application of the model.