Equations · equation

Dirac Equation

Particle Physics · 1928

Equation
(iγ^μ·∂_μ − m)ψ = 0
Field
Particle Physics
Named After
Paul Dirac
Symbols
ψ the electron's four-component field · γ^μ the Dirac matrices · ∂_μ spacetime derivatives · m electron mass · units where ℏ = c = 1
Year
1928

Significance

Quantum mechanics made compatible with special relativity — and the equation demanded more than it was asked for: electron spin fell out automatically, and its negative-energy solutions predicted antimatter four years before the positron was found.

Theories

Related

Constants

Elements

Referenced by

constant
element
equation
theory

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From the Equations database in Notion, last edited 2026-08-15. This page is the row, rendered by the build; nothing on it is written by hand.