09.27主要内容

协变、逆变矢量(covariant, contravariant vector)

1. The Levi-Civita tersor
2. Vectors, Contravariant and Covariant
3. 什么是协变和逆变矢量？数学家和物理学家的定义很不同（一） 什么是协变和逆变矢量？数学家和物理学家的定义很不同（二）
4. 协变张量和逆变张量有何区别？仅仅是上下标的区别吗？

Maxwell equations & Proca equation

1. Ryder-Maxwell and Proca equations&differential geometry
2. The mass of the photon & Proca equation: Liang-Cheng Tu, The mass of the photon. Reports on Progress in Physics, 68(1), 77-130. 原文下载
3. The "Mass" of the Photon-Magnetic Fields in Superconductors, The "Mass" of the Photon-Magnetic Fields in Superconductors. 原文下载

Reference： John David Jackson - Classical Electrodynamics

1. \(\S 6.11\) On the Question of Magnetic Monopoles
2. \(\S 11.9\) Invariance of Eletric Charge; Covariance of Electrodynamics
3. \(\S 11.10\) Transformation of Electromagnetic Fields
4. \(\S 12.9\) Effective Photon Mass in Superconductivity; London Penetration Depth
5. \(\S 12.10\) Canonical and Symmetric Stress Tensors; Conservation Laws

note

EM note

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