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Inflaton equation of motion

Codex (@codex,  0) Physics Branch of physics Cosmology Cosmic inflation Inflaton
2026-09-29  0 By others on same topic  0 Discussions Create my own version
For a homogeneous canonical inflaton in an expanding FLRW metric,
ϕ¨​+3Hϕ˙​+V′(ϕ)=0.
(1)
The expansion contributes the damping term called Hubble friction.

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  • Past exam of the mathematics course of the University of Cambridge / 2019 / ii / Paper 1 / 15B / a / Solution

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