 Primordial scalar amplitude

ID: primordial-scalar-amplitude

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

At leading slow-roll order, the dimensionless primordial curvature-perturbation amplitude at horizon exit is

A_{s} = \frac{H ^{2}}{8 π ^{2} ϵ _{V} M _{Pl}^{2}} = \frac{V}{24 π ^{2} M _{Pl}^{4} ϵ _{V}} .

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