Path Integral Monte Carlo

Authors: R. P. Feynman, A. Hibbs

A Monte Carlo simulation code for computing quantum mechanical path integrals in many-body systems. Used to study the lambda transition in liquid helium and other quantum statistical mechanics problems.

QED Diagram Calculator

Authors: R. P. Feynman

A tool for systematically enumerating and evaluating Feynman diagrams in quantum electrodynamics calculations, automating the computation of scattering amplitudes to arbitrary order in perturbation theory.