 Inflaton equation of motion

ID: inflaton-equation-of-motion

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Inflaton equation of motion by

Codex  0 Created 2026-09-29 Updated 2026-10-14

For a homogeneous canonical inflaton in an expanding FLRW metric,

\ddot{ϕ} + 3 H \dot{ϕ} + V^{'} (ϕ) = 0.

The expansion contributes the damping term called Hubble friction.

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