The Feynman checkerboard is a conceptual model used to visualize and understand certain aspects of quantum mechanics, specifically in the context of quantum field theory and the path integral formulation. Introduced by physicist Richard Feynman, the checkerboard model is a way to represent the quantum behavior of a particle in a two-dimensional lattice. In this model, the space-time continuum is represented as a checkerboard where the “squares” represent discrete time and space coordinates.
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