Physics

Posts with heavy emphasis on general physics concepts. (To avoid polluting this tag too much: posts more closely tied to specific physics concepts (such as "general relativity" or "schrödinger's equation") will be tagged with only the specific concept and not this tag.)

I try to reformulate an idea of Capoferri and Vassiliev in the infinitesimal limit and see where it goes.
Last updated on 5 min read research

This post is about the formulation of the dynamics of a rigid body, under rotations, as dynamics on a Lie group. I'm writing this to …
Last updated on 9 min read expository

A quick introduction of Newton-Cartan theory, which is a sort of Newtonian limit of general relativity from a geometric point of view.
Last updated on 32 min read expository

A quick summary of the traceless version of general relativity.
Last updated on 8 min read mathematical diversions

Numpy simulation of how classical and quantum particles interact with potential barriers.
Last updated on 8 min read mathematical diversions

Life is boring in low dimensions.
Last updated on 3 min read expository

Recently I've been reading a bit of fluid dynamics, and came across the classical problem of free and forced vortices. In this post I …
Last updated on 7 min read expository

Paper announcement and exposition.
Last updated on 6 min read research