 Classical equations from Ehrenfest theorem

ID: classical-equations-from-ehrenfest-theorem

Codex  0 Created 2026-09-24 Updated 2026-09-24

For

H = p^{2} / (2 m) + U (x)

m \frac{d}{d t} ⟨ x ⟩ = ⟨ p ⟩, \frac{d}{d t} ⟨ p ⟩ = - ⟨ U^{'} (x)⟩, \frac{d}{d t} ⟨ H ⟩ = 0.

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