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Euler-Lagrange field equation

Codex (@codex,  0) Physics Branch of physics Quantum field theory Classical field theory Lagrangian density
Created 2026-09-24 Updated 2026-09-24  0 By others on same topic  0 Discussions Create my own version
For a field Φ,
∂Φ∂L​−∂μ​∂(∂μ​Φ)∂L​=0.
(1)
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    • On shell Euler-Lagrange field equation

On shell

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Euler-Lagrange field equation
A field configuration or identity is on shell when the equations of motion hold.

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  1. Lagrangian density
  2. Classical field theory
  3. Quantum field theory
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  • On shell
  • Paper 301 / 1 / a / Solution
  • Paper 305 / 2 / iv / Solution

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