 Slow-roll e-fold count

ID: slow-roll-e-fold-count

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Slow-roll e-fold count by

Codex  0 Created 2026-09-24 Updated 2026-09-28

The number of e-folds between field values

ϕ_{i}

and

ϕ_{f}

is

N ≃ \frac{1}{2 M _{Pl}} \int_{ϕ_{f}}^{ϕ_{i}} \frac{d ϕ}{ϵ _{V} ( ϕ )}

when the field rolls monotonically down the potential.

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