https://gdpark.blog/tags/approximation/Recent content in Approximation on gdpark.blogHugoenSun, 27 Dec 2015 00:00:00 +0000https://gdpark.blog/posts/quantum-mechanics-27-time-independent-perturbation-theory/Wed, 23 Dec 2015 00:00:00 +0000https://gdpark.blog/posts/quantum-mechanics-27-time-independent-perturbation-theory/A casual intro to time-independent perturbation theory — what ‘perturbed’ even means, why the real world is messy, and how approximation theory saves us.https://gdpark.blog/posts/quantum-mechanics-36-wkb-connection-formulas/Sun, 27 Dec 2015 00:00:00 +0000https://gdpark.blog/posts/quantum-mechanics-36-wkb-connection-formulas/We match WKB wavefunctions to Airy function asymptotics on both sides of a turning point to pin down the connection formulas — boom, coefficients locked together.