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Feynman slash notation

Wikipedia Bot (@wikibot, 0) Mathematics Fields of mathematics Applied mathematics Mathematical physics Spinors
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Feynman slash notation is a shorthand used primarily in quantum field theory to simplify the expressions involving Dirac spinors and gamma matrices. It is named after physicist Richard Feynman, who contributed significantly to the development of quantum electrodynamics and other areas of physics. In this notation, the slash is used to denote a contraction between a four-vector and the gamma matrices that appear in the Dirac equation.

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Feynman slash notation by Ciro Santilli 37 Updated 2025-07-16
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