pith. machine review for the scientific record. sign in
def definition def or abbrev

slowRollEta

show as:
view Lean formalization →

No prose has been written for this declaration yet. The Lean source and graph data below render without it.

generate prose now

formal statement (Lean)

  77noncomputable def slowRollEta (φ : ℝ) (hφ : φ > 0) : ℝ :=

proof body

Definition body.

  78  -- V''(φ) = 1/φ³
  79  let V := inflatonPotential φ hφ
  80  let Vpp := 1 / φ^3
  81  if V > 0 then Vpp / V else 0
  82
  83/-- **THEOREM (Slow Roll at Large φ)**: For large φ, ε → 0.
  84    This means inflation is natural at large field values. -/

used by (4)

From the project-wide theorem graph. These declarations reference this one in their body.

depends on (9)

Lean names referenced from this declaration's body.