Welcome to PhysicsOverflow! PhysicsOverflow is an open platform for community peer review and graduate-level Physics discussion.

Please help promote PhysicsOverflow ads elsewhere if you like it.

New printer friendly PO pages!

Migration to Bielefeld University was successful!

Please vote for this year's PhysicsOverflow ads!

Please do help out in categorising submissions. Submit a paper to PhysicsOverflow!

... see more

(propose a free ad)

This question started as an attempt to better understand the origin of the Schrödinger operator. Consider a real valued scalar field $f(x,y,z)$ and the squared absolute value of its gradient $E=|\nabla f(x,y,z)|^2$. In topics related to thermal physics, electrostatics, elasticity, acoustics or similar, which scalar fields $f$ appear such that $E$ is interpreted as the density of the internal energy of $f$? References will be appreciated. Best regards, Daniel

user contributions licensed under cc by-sa 3.0 with attribution required