https://haifei-home.pages.dev/en/tags/gauge-field-theory/Recent content in Gauge Field Theory on Haifei's HomeHugoenhfwang132@gmail.com (hfwang132)hfwang132@gmail.com (hfwang132)This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.Mon, 17 Feb 2025 17:15:55 +0800https://haifei-home.pages.dev/en/post_20250217_%E8%A7%84%E8%8C%83%E5%9C%BA%E8%AE%BA%E8%A7%86%E8%A7%92%E4%B8%8B%E7%9A%84%E7%94%B5%E5%8A%A8%E5%8A%9B%E5%AD%A6-%E6%9B%B4%E9%AB%98%E6%9B%B4%E5%A6%99%E7%9A%84%E7%94%B5%E5%8A%A8%E5%8A%9B%E5%AD%A6-2/Mon, 17 Feb 2025 17:15:55 +0800hfwang132@gmail.com (hfwang132)https://haifei-home.pages.dev/en/post_20250217_%E8%A7%84%E8%8C%83%E5%9C%BA%E8%AE%BA%E8%A7%86%E8%A7%92%E4%B8%8B%E7%9A%84%E7%94%B5%E5%8A%A8%E5%8A%9B%E5%AD%A6-%E6%9B%B4%E9%AB%98%E6%9B%B4%E5%A6%99%E7%9A%84%E7%94%B5%E5%8A%A8%E5%8A%9B%E5%AD%A6-2/<p>If you have not yet read the previous article, please see:</p> <p><a href="https://zhuanlan.zhihu.com/p/21808352165" target="_blank" rel="noopener noreffer ">Electrodynamics from the Perspective of Differential Geometry [Higher and More Elegant Electrodynamics · 1]</a></p> <p>This article uses many concepts from the previous article, so please make sure you have read it.</p> <p>This article continues to use the metric convention of \((-,+,+,+)\).</p> <hr> <p><strong>Why is electrodynamics a gauge field theory?</strong></p> <p>To understand what this statement means, we must first understand what electrodynamics is and what gauge field theory is.</p>