https://gdpark.blog/tags/commutators/Recent content in Commutators on gdpark.blogHugoenThu, 24 Dec 2015 00:00:00 +0000https://gdpark.blog/posts/quantum-mechanics-21-angular-momentum/Sun, 20 Dec 2015 00:00:00 +0000https://gdpark.blog/posts/quantum-mechanics-21-angular-momentum/Second semester is here and we’re diving straight into angular momentum — turning L = r × p into a full-on quantum operator and chasing down its eigenvalues!https://gdpark.blog/posts/quantum-mechanics-28-the-feynman-hellmann-theorem/Thu, 24 Dec 2015 00:00:00 +0000https://gdpark.blog/posts/quantum-mechanics-28-the-feynman-hellmann-theorem/Working through three practice problems on commutators and the virial theorem to nail down the Feynman-Hellmann theorem before diving into hydrogen’s fine structure.