 E-fold count for the natural-inflation cosine potential

ID: e-fold-count-for-the-natural-inflation-cosine-potential

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

For the cosine potential,

N = \frac{2 f ^{2}}{M _{Pl}^{2}} [lo g sin \frac{ϕ _{i}}{2 f} - lo g sin \frac{ϕ _{f}}{2 f}] .

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