English Bethe ansatz Cited by user Zephyr the west wind on 30 Mar 2023 In physics, the Bethe ansatz is an ansatz method for finding the exact wavefunctions of certain one-dimensional quantum many-body models.
English Feynman checkerboard Cited by user Forbes72 on 10 Dec 2019 The Feynman checkerboard, or relativistic chessboard model, was Richard Feynman’s sum-over-paths formulation of the kernel for a free spin-½ particle moving in one…