 Dirac action

ID: dirac-action

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Dirac action by

Codex  0 2026-09-28

The free Dirac action is

S_{D} = \int d^{4} x \overset{ˉ}{ψ} (i γ^{μ} \partial_{μ} - m) ψ .

Its Euler-Lagrange equations are the Dirac equation and its adjoint.

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