<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>理论物理 on s-ai-unix's Blog</title><link>https://s-ai-unix.github.io/tags/%E7%90%86%E8%AE%BA%E7%89%A9%E7%90%86/</link><description>Recent content in 理论物理 on s-ai-unix's Blog</description><generator>Hugo -- 0.161.1</generator><language>zh-cn</language><lastBuildDate>Sun, 22 Feb 2026 12:00:00 +0800</lastBuildDate><atom:link href="https://s-ai-unix.github.io/tags/%E7%90%86%E8%AE%BA%E7%89%A9%E7%90%86/index.xml" rel="self" type="application/rss+xml"/><item><title>[七] 希尔伯特作用量：爱因斯坦场方程的数学之源</title><link>https://s-ai-unix.github.io/posts/hilbert-action/</link><pubDate>Sun, 22 Feb 2026 12:00:00 +0800</pubDate><guid>https://s-ai-unix.github.io/posts/hilbert-action/</guid><description>从最小作用量原理到广义相对论的核心方程，详解希尔伯特作用量的数学结构、几何意义和物理内涵。</description></item></channel></rss>