The distribution of electromagnetic energy density in a dispersive and dissipative metamaterial consisting of arrays of wires and split-ring resonators is obtained, using a simple approach. We show energy stored in the system can be regarded to consist of energy density of electric and magnetic fields plus energy density terms related to response of the medium. To derive energy density formulas of the medium, we compare equations of motion of polarization and magnetization of the system with corresponding differential equations of appropriate RLC circuits.

中文翻译：

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色散和耗散超材料中电磁能量密度的分布

使用简单的方法获得了由导线阵列和裂环谐振器组成的色散和耗散超材料中的电磁能量密度分布。我们表明存储在系统中的能量可以被认为是由电场和磁场的能量密度加上与介质响应相关的能量密度项组成。为了推导出介质的能量密度公式，我们将系统的极化和磁化运动方程与相应 RLC 电路的相应微分方程进行比较。