Computational Physics Notes

Solving the Schrödinger equation for a Gaussian wave packet incident on two Gaussian-aperture slits, deriving a closed-form interference pattern via complex Gaussian integrals, and checking the predicted fringe spacing numerically.

Jul 16, 2026

Kyle Arean-Raines

The double slit experiment, part 1: the background

quantum mechanics

wave-particle duality

interference

A conceptual walkthrough of diffraction and interference in the classical wave picture, the quantum double-slit thought experiment with single photons, and Feynman’s neutron-scattering-crystal analogy for which-path information.

Jul 10, 2026

Kyle Arean-Raines

Categories

Odds that you’re the one

Doppler cooling: using lasers to cool atoms

The double slit experiment, part 2: the math

The double slit experiment, part 1: the background

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