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Euler–Lagrange field equations
Layer 1 — Physics
in the
Classical Field Theory
subtree
∂_μ (∂ℒ/∂(∂_μ φ)) − ∂ℒ/∂φ = 0: EOM derived from stationarising the action over field configurations.
Related concepts
Action principle (field theory)
Classical stress–energy tensor
Canonical field quantisation
Klein–Gordon scalar field
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