协变形式电磁场方程  

Electromagnetic Equations with Covariant Forms

作　　者：王永龙[1] 

机构地区：[1]临沂师范学院理学院,山东临沂276005

出　　处：《临沂师范学院学报》2010年第3期81-84,共4页Journal of Linyi Teachers' College

摘　　要：基于通常形式Maxwell方程组给出四维协变形式方程组;然后基于四维协变方程组,在真空状态下根据Lorentz不变推得真空条件下Maxwell方程组.借助Lagrange表述与Hamilton表述间Legendre变换,定义了协强张量,展开式说明是四维能流密度张量,最后给出四维协变形式的能量动量守恒定律.Based on Maxwell＇s equations with the most general forms, the covariant forms are deduced. In terms of the covariant equations, in vacuum, the general Maxwell equations are then deduced from the invariance of the equation under Lorentz＇s transformations. Following the Legendre transformation between Lagrange and Hamilton formalism, we extendedly defined a tensor, and give its expanded expression. Then the conservation law of energy- momentum is given by the tensor.

关 键 词：MAXWELL方程组 LORENTZ变换 能量动量守恒定律 

分 类 号：O442[理学—电磁学]